Home / 8,011.28-12,005.40-4,541.20

Finding the Fourth Proportional to 8,011.28, 12,005.40 and 4,541.20

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Solution

The fourth proportional to 8,011.28, 12,005.40 and 4,541.20 is: 6,805.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,011.28 : 12,005.40 = 4,541.20 : x
  2. Step 2: Convert to fraction form
    8,011.28/12,005.40 = 4,541.20/x
  3. Step 3: Cross multiply
    8,011.28x = 12,005.40 × 4,541.20
  4. Step 4: Simplify right side
    8,011.28x = 54,518,922.48
  5. Step 5: Solve for x
    x = 54,518,922.48/8,011.28
  6. Step 6: Final answer
    x = 6,805.27

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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.