Home / 8,315.62-12,439.24-7,585.70

Finding the Fourth Proportional to 8,315.62, 12,439.24 and 7,585.70

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Solution

The fourth proportional to 8,315.62, 12,439.24 and 7,585.70 is: 11,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.62 : 12,439.24 = 7,585.70 : x
  2. Step 2: Convert to fraction form
    8,315.62/12,439.24 = 7,585.70/x
  3. Step 3: Cross multiply
    8,315.62x = 12,439.24 × 7,585.70
  4. Step 4: Simplify right side
    8,315.62x = 94,360,261.71
  5. Step 5: Solve for x
    x = 94,360,261.71/8,315.62
  6. Step 6: Final answer
    x = 11,347.35

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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.