Home / 5,565.12-8,349.28-2,639.40

Finding the Fourth Proportional to 5,565.12, 8,349.28 and 2,639.40

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Solution

The fourth proportional to 5,565.12, 8,349.28 and 2,639.40 is: 3,959.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,565.12 : 8,349.28 = 2,639.40 : x
  2. Step 2: Convert to fraction form
    5,565.12/8,349.28 = 2,639.40/x
  3. Step 3: Cross multiply
    5,565.12x = 8,349.28 × 2,639.40
  4. Step 4: Simplify right side
    5,565.12x = 22,037,089.63
  5. Step 5: Solve for x
    x = 22,037,089.63/5,565.12
  6. Step 6: Final answer
    x = 3,959.86

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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.