Home / 8,722.16-12,037.62-5,187.32

Finding the Fourth Proportional to 8,722.16, 12,037.62 and 5,187.32

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Solution

The fourth proportional to 8,722.16, 12,037.62 and 5,187.32 is: 7,159.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.16 : 12,037.62 = 5,187.32 : x
  2. Step 2: Convert to fraction form
    8,722.16/12,037.62 = 5,187.32/x
  3. Step 3: Cross multiply
    8,722.16x = 12,037.62 × 5,187.32
  4. Step 4: Simplify right side
    8,722.16x = 62,442,986.98
  5. Step 5: Solve for x
    x = 62,442,986.98/8,722.16
  6. Step 6: Final answer
    x = 7,159.12

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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.