Home / 8,010.40-12,001.20-4,928.80

Finding the Fourth Proportional to 8,010.40, 12,001.20 and 4,928.80

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Solution

The fourth proportional to 8,010.40, 12,001.20 and 4,928.80 is: 7,384.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,010.40 : 12,001.20 = 4,928.80 : x
  2. Step 2: Convert to fraction form
    8,010.40/12,001.20 = 4,928.80/x
  3. Step 3: Cross multiply
    8,010.40x = 12,001.20 × 4,928.80
  4. Step 4: Simplify right side
    8,010.40x = 59,151,514.56
  5. Step 5: Solve for x
    x = 59,151,514.56/8,010.40
  6. Step 6: Final answer
    x = 7,384.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.