Home / 8,724.28-12,038.34-5,186.20

Finding the Fourth Proportional to 8,724.28, 12,038.34 and 5,186.20

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Solution

The fourth proportional to 8,724.28, 12,038.34 and 5,186.20 is: 7,156.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,724.28 : 12,038.34 = 5,186.20 : x
  2. Step 2: Convert to fraction form
    8,724.28/12,038.34 = 5,186.20/x
  3. Step 3: Cross multiply
    8,724.28x = 12,038.34 × 5,186.20
  4. Step 4: Simplify right side
    8,724.28x = 62,433,238.91
  5. Step 5: Solve for x
    x = 62,433,238.91/8,724.28
  6. Step 6: Final answer
    x = 7,156.26

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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.