Home / 7,430.15-11,145.12-1,807.88

Finding the Fourth Proportional to 7,430.15, 11,145.12 and 1,807.88

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Solution

The fourth proportional to 7,430.15, 11,145.12 and 1,807.88 is: 2,711.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,430.15 : 11,145.12 = 1,807.88 : x
  2. Step 2: Convert to fraction form
    7,430.15/11,145.12 = 1,807.88/x
  3. Step 3: Cross multiply
    7,430.15x = 11,145.12 × 1,807.88
  4. Step 4: Simplify right side
    7,430.15x = 20,148,974.78
  5. Step 5: Solve for x
    x = 20,148,974.78/7,430.15
  6. Step 6: Final answer
    x = 2,711.78

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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.