Home / 8,724.26-12,038.91-5,187.74

Finding the Fourth Proportional to 8,724.26, 12,038.91 and 5,187.74

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Solution

The fourth proportional to 8,724.26, 12,038.91 and 5,187.74 is: 7,158.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.26 : 12,038.91 = 5,187.74 : x
  2. Step 2: Convert to fraction form
    8,724.26/12,038.91 = 5,187.74/x
  3. Step 3: Cross multiply
    8,724.26x = 12,038.91 × 5,187.74
  4. Step 4: Simplify right side
    8,724.26x = 62,454,734.96
  5. Step 5: Solve for x
    x = 62,454,734.96/8,724.26
  6. Step 6: Final answer
    x = 7,158.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.