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Finding the Fourth Proportional to 5,892.91, 8,129.51 and 5,221.40

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Solution

The fourth proportional to 5,892.91, 8,129.51 and 5,221.40 is: 7,203.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,892.91 : 8,129.51 = 5,221.40 : x
  2. Step 2: Convert to fraction form
    5,892.91/8,129.51 = 5,221.40/x
  3. Step 3: Cross multiply
    5,892.91x = 8,129.51 × 5,221.40
  4. Step 4: Simplify right side
    5,892.91x = 42,447,423.51
  5. Step 5: Solve for x
    x = 42,447,423.51/5,892.91
  6. Step 6: Final answer
    x = 7,203.13

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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.