Home / 3,312.86-4,572.14-1,915.61

Finding the Fourth Proportional to 3,312.86, 4,572.14 and 1,915.61

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Solution

The fourth proportional to 3,312.86, 4,572.14 and 1,915.61 is: 2,643.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.86 : 4,572.14 = 1,915.61 : x
  2. Step 2: Convert to fraction form
    3,312.86/4,572.14 = 1,915.61/x
  3. Step 3: Cross multiply
    3,312.86x = 4,572.14 × 1,915.61
  4. Step 4: Simplify right side
    3,312.86x = 8,758,404.67
  5. Step 5: Solve for x
    x = 8,758,404.67/3,312.86
  6. Step 6: Final answer
    x = 2,643.76

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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.