Home / 5,417.70-8,126.55-2,130.90

Finding the Fourth Proportional to 5,417.70, 8,126.55 and 2,130.90

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Solution

The fourth proportional to 5,417.70, 8,126.55 and 2,130.90 is: 3,196.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.70 : 8,126.55 = 2,130.90 : x
  2. Step 2: Convert to fraction form
    5,417.70/8,126.55 = 2,130.90/x
  3. Step 3: Cross multiply
    5,417.70x = 8,126.55 × 2,130.90
  4. Step 4: Simplify right side
    5,417.70x = 17,316,865.40
  5. Step 5: Solve for x
    x = 17,316,865.40/5,417.70
  6. Step 6: Final answer
    x = 3,196.35

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.