Home / 5,411.92-8,117.88-1,307.92

Finding the Fourth Proportional to 5,411.92, 8,117.88 and 1,307.92

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Solution

The fourth proportional to 5,411.92, 8,117.88 and 1,307.92 is: 1,961.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,411.92 : 8,117.88 = 1,307.92 : x
  2. Step 2: Convert to fraction form
    5,411.92/8,117.88 = 1,307.92/x
  3. Step 3: Cross multiply
    5,411.92x = 8,117.88 × 1,307.92
  4. Step 4: Simplify right side
    5,411.92x = 10,617,537.61
  5. Step 5: Solve for x
    x = 10,617,537.61/5,411.92
  6. Step 6: Final answer
    x = 1,961.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.