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Finding the Fourth Proportional to 6,471.70, 8,929.40 and 4,700.22

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Solution

The fourth proportional to 6,471.70, 8,929.40 and 4,700.22 is: 6,485.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,471.70 : 8,929.40 = 4,700.22 : x
  2. Step 2: Convert to fraction form
    6,471.70/8,929.40 = 4,700.22/x
  3. Step 3: Cross multiply
    6,471.70x = 8,929.40 × 4,700.22
  4. Step 4: Simplify right side
    6,471.70x = 41,970,144.47
  5. Step 5: Solve for x
    x = 41,970,144.47/6,471.70
  6. Step 6: Final answer
    x = 6,485.18

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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.