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Finding the Fourth Proportional to 5,614.50, 7,748.25 and 3,130.50

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Solution

The fourth proportional to 5,614.50, 7,748.25 and 3,130.50 is: 4,320.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,614.50 : 7,748.25 = 3,130.50 : x
  2. Step 2: Convert to fraction form
    5,614.50/7,748.25 = 3,130.50/x
  3. Step 3: Cross multiply
    5,614.50x = 7,748.25 × 3,130.50
  4. Step 4: Simplify right side
    5,614.50x = 24,255,896.63
  5. Step 5: Solve for x
    x = 24,255,896.63/5,614.50
  6. Step 6: Final answer
    x = 4,320.22

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Double scale
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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.