Home / 7,470.40-11,205.60-6,908.80

Finding the Fourth Proportional to 7,470.40, 11,205.60 and 6,908.80

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Solution

The fourth proportional to 7,470.40, 11,205.60 and 6,908.80 is: 10,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,470.40 : 11,205.60 = 6,908.80 : x
  2. Step 2: Convert to fraction form
    7,470.40/11,205.60 = 6,908.80/x
  3. Step 3: Cross multiply
    7,470.40x = 11,205.60 × 6,908.80
  4. Step 4: Simplify right side
    7,470.40x = 77,417,249.28
  5. Step 5: Solve for x
    x = 77,417,249.28/7,470.40
  6. Step 6: Final answer
    x = 10,363.20

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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.