Home / 5,146.19-7,102.09-3,130.39

Finding the Fourth Proportional to 5,146.19, 7,102.09 and 3,130.39

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Solution

The fourth proportional to 5,146.19, 7,102.09 and 3,130.39 is: 4,320.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.19 : 7,102.09 = 3,130.39 : x
  2. Step 2: Convert to fraction form
    5,146.19/7,102.09 = 3,130.39/x
  3. Step 3: Cross multiply
    5,146.19x = 7,102.09 × 3,130.39
  4. Step 4: Simplify right side
    5,146.19x = 22,232,324.31
  5. Step 5: Solve for x
    x = 22,232,324.31/5,146.19
  6. Step 6: Final answer
    x = 4,320.15

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.