Home / 8,390.18-12,585.07-3,392.38

Finding the Fourth Proportional to 8,390.18, 12,585.07 and 3,392.38

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Solution

The fourth proportional to 8,390.18, 12,585.07 and 3,392.38 is: 5,088.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.18 : 12,585.07 = 3,392.38 : x
  2. Step 2: Convert to fraction form
    8,390.18/12,585.07 = 3,392.38/x
  3. Step 3: Cross multiply
    8,390.18x = 12,585.07 × 3,392.38
  4. Step 4: Simplify right side
    8,390.18x = 42,693,359.74
  5. Step 5: Solve for x
    x = 42,693,359.74/8,390.18
  6. Step 6: Final answer
    x = 5,088.49

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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.