Home / 1,520.34-2,278.85-1,000.69

Finding the Fourth Proportional to 1,520.34, 2,278.85 and 1,000.69

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Solution

The fourth proportional to 1,520.34, 2,278.85 and 1,000.69 is: 1,499.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.34 : 2,278.85 = 1,000.69 : x
  2. Step 2: Convert to fraction form
    1,520.34/2,278.85 = 1,000.69/x
  3. Step 3: Cross multiply
    1,520.34x = 2,278.85 × 1,000.69
  4. Step 4: Simplify right side
    1,520.34x = 2,280,420.25
  5. Step 5: Solve for x
    x = 2,280,420.25/1,520.34
  6. Step 6: Final answer
    x = 1,499.94

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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.