Home / 5,432.08-8,143.11-1,920.16

Finding the Fourth Proportional to 5,432.08, 8,143.11 and 1,920.16

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Solution

The fourth proportional to 5,432.08, 8,143.11 and 1,920.16 is: 2,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,432.08 : 8,143.11 = 1,920.16 : x
  2. Step 2: Convert to fraction form
    5,432.08/8,143.11 = 1,920.16/x
  3. Step 3: Cross multiply
    5,432.08x = 8,143.11 × 1,920.16
  4. Step 4: Simplify right side
    5,432.08x = 15,636,074.10
  5. Step 5: Solve for x
    x = 15,636,074.10/5,432.08
  6. Step 6: Final answer
    x = 2,878.47

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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.