Home / 8,870.28-12,246.22-7,886.20

Finding the Fourth Proportional to 8,870.28, 12,246.22 and 7,886.20

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Solution

The fourth proportional to 8,870.28, 12,246.22 and 7,886.20 is: 10,887.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,870.28 : 12,246.22 = 7,886.20 : x
  2. Step 2: Convert to fraction form
    8,870.28/12,246.22 = 7,886.20/x
  3. Step 3: Cross multiply
    8,870.28x = 12,246.22 × 7,886.20
  4. Step 4: Simplify right side
    8,870.28x = 96,576,140.16
  5. Step 5: Solve for x
    x = 96,576,140.16/8,870.28
  6. Step 6: Final answer
    x = 10,887.61

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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.