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Finding the Fourth Proportional to 6,312.24, 8,711.28 and 5,262.48

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Solution

The fourth proportional to 6,312.24, 8,711.28 and 5,262.48 is: 7,262.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.24 : 8,711.28 = 5,262.48 : x
  2. Step 2: Convert to fraction form
    6,312.24/8,711.28 = 5,262.48/x
  3. Step 3: Cross multiply
    6,312.24x = 8,711.28 × 5,262.48
  4. Step 4: Simplify right side
    6,312.24x = 45,842,936.77
  5. Step 5: Solve for x
    x = 45,842,936.77/6,312.24
  6. Step 6: Final answer
    x = 7,262.55

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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.