Home / 8,722.08-12,038.16-5,732.64

Finding the Fourth Proportional to 8,722.08, 12,038.16 and 5,732.64

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Solution

The fourth proportional to 8,722.08, 12,038.16 and 5,732.64 is: 7,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.08 : 12,038.16 = 5,732.64 : x
  2. Step 2: Convert to fraction form
    8,722.08/12,038.16 = 5,732.64/x
  3. Step 3: Cross multiply
    8,722.08x = 12,038.16 × 5,732.64
  4. Step 4: Simplify right side
    8,722.08x = 69,010,437.54
  5. Step 5: Solve for x
    x = 69,010,437.54/8,722.08
  6. Step 6: Final answer
    x = 7,912.15

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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.