Home / 8,312.78-11,472.32-4,777.14

Finding the Fourth Proportional to 8,312.78, 11,472.32 and 4,777.14

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Solution

The fourth proportional to 8,312.78, 11,472.32 and 4,777.14 is: 6,592.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,312.78 : 11,472.32 = 4,777.14 : x
  2. Step 2: Convert to fraction form
    8,312.78/11,472.32 = 4,777.14/x
  3. Step 3: Cross multiply
    8,312.78x = 11,472.32 × 4,777.14
  4. Step 4: Simplify right side
    8,312.78x = 54,804,878.76
  5. Step 5: Solve for x
    x = 54,804,878.76/8,312.78
  6. Step 6: Final answer
    x = 6,592.85

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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.