Home / 8,789.28-12,130.80-5,254.56

Finding the Fourth Proportional to 8,789.28, 12,130.80 and 5,254.56

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Solution

The fourth proportional to 8,789.28, 12,130.80 and 5,254.56 is: 7,252.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,789.28 : 12,130.80 = 5,254.56 : x
  2. Step 2: Convert to fraction form
    8,789.28/12,130.80 = 5,254.56/x
  3. Step 3: Cross multiply
    8,789.28x = 12,130.80 × 5,254.56
  4. Step 4: Simplify right side
    8,789.28x = 63,742,016.45
  5. Step 5: Solve for x
    x = 63,742,016.45/8,789.28
  6. Step 6: Final answer
    x = 7,252.25

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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.