Home / 1,560.20-2,344.55-830.30

Finding the Fourth Proportional to 1,560.20, 2,344.55 and 830.30

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Solution

The fourth proportional to 1,560.20, 2,344.55 and 830.30 is: 1,247.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.20 : 2,344.55 = 830.30 : x
  2. Step 2: Convert to fraction form
    1,560.20/2,344.55 = 830.30/x
  3. Step 3: Cross multiply
    1,560.20x = 2,344.55 × 830.30
  4. Step 4: Simplify right side
    1,560.20x = 1,946,663.99
  5. Step 5: Solve for x
    x = 1,946,663.99/1,560.20
  6. Step 6: Final answer
    x = 1,247.71

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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.