Home / 7,038.18-9,711.28-3,893.76

Finding the Fourth Proportional to 7,038.18, 9,711.28 and 3,893.76

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Solution

The fourth proportional to 7,038.18, 9,711.28 and 3,893.76 is: 5,372.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,038.18 : 9,711.28 = 3,893.76 : x
  2. Step 2: Convert to fraction form
    7,038.18/9,711.28 = 3,893.76/x
  3. Step 3: Cross multiply
    7,038.18x = 9,711.28 × 3,893.76
  4. Step 4: Simplify right side
    7,038.18x = 37,813,393.61
  5. Step 5: Solve for x
    x = 37,813,393.61/7,038.18
  6. Step 6: Final answer
    x = 5,372.61

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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.