Home / 7,359.20-11,031.60-2,970.80

Finding the Fourth Proportional to 7,359.20, 11,031.60 and 2,970.80

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Solution

The fourth proportional to 7,359.20, 11,031.60 and 2,970.80 is: 4,453.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,359.20 : 11,031.60 = 2,970.80 : x
  2. Step 2: Convert to fraction form
    7,359.20/11,031.60 = 2,970.80/x
  3. Step 3: Cross multiply
    7,359.20x = 11,031.60 × 2,970.80
  4. Step 4: Simplify right side
    7,359.20x = 32,772,677.28
  5. Step 5: Solve for x
    x = 32,772,677.28/7,359.20
  6. Step 6: Final answer
    x = 4,453.29

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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.