Home / 8,060.80-11,121.60-7,254.40

Finding the Fourth Proportional to 8,060.80, 11,121.60 and 7,254.40

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Solution

The fourth proportional to 8,060.80, 11,121.60 and 7,254.40 is: 10,009.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,060.80 : 11,121.60 = 7,254.40 : x
  2. Step 2: Convert to fraction form
    8,060.80/11,121.60 = 7,254.40/x
  3. Step 3: Cross multiply
    8,060.80x = 11,121.60 × 7,254.40
  4. Step 4: Simplify right side
    8,060.80x = 80,680,535.04
  5. Step 5: Solve for x
    x = 80,680,535.04/8,060.80
  6. Step 6: Final answer
    x = 10,009.00

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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.