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Finding the Fourth Proportional to 7,471.64, 10,309.74 and 4,487

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Solution

The fourth proportional to 7,471.64, 10,309.74 and 4,487 is: 6,191.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,471.64 : 10,309.74 = 4,487 : x
  2. Step 2: Convert to fraction form
    7,471.64/10,309.74 = 4,487/x
  3. Step 3: Cross multiply
    7,471.64x = 10,309.74 × 4,487
  4. Step 4: Simplify right side
    7,471.64x = 46,259,803.38
  5. Step 5: Solve for x
    x = 46,259,803.38/7,471.64
  6. Step 6: Final answer
    x = 6,191.39

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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.