Home / 7,287.20-10,931.60-2,670.20

Finding the Fourth Proportional to 7,287.20, 10,931.60 and 2,670.20

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Solution

The fourth proportional to 7,287.20, 10,931.60 and 2,670.20 is: 4,005.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.20 : 10,931.60 = 2,670.20 : x
  2. Step 2: Convert to fraction form
    7,287.20/10,931.60 = 2,670.20/x
  3. Step 3: Cross multiply
    7,287.20x = 10,931.60 × 2,670.20
  4. Step 4: Simplify right side
    7,287.20x = 29,189,490.31
  5. Step 5: Solve for x
    x = 29,189,490.31/7,287.20
  6. Step 6: Final answer
    x = 4,005.59

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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.