Home / 5,146.25-7,102.18-3,130.45

Finding the Fourth Proportional to 5,146.25, 7,102.18 and 3,130.45

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Solution

The fourth proportional to 5,146.25, 7,102.18 and 3,130.45 is: 4,320.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.25 : 7,102.18 = 3,130.45 : x
  2. Step 2: Convert to fraction form
    5,146.25/7,102.18 = 3,130.45/x
  3. Step 3: Cross multiply
    5,146.25x = 7,102.18 × 3,130.45
  4. Step 4: Simplify right side
    5,146.25x = 22,233,003.73
  5. Step 5: Solve for x
    x = 22,233,003.73/5,146.25
  6. Step 6: Final answer
    x = 4,320.24

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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.