Home / 1,560.26-2,340.66-520.40

Finding the Fourth Proportional to 1,560.26, 2,340.66 and 520.40

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Solution

The fourth proportional to 1,560.26, 2,340.66 and 520.40 is: 780.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.26 : 2,340.66 = 520.40 : x
  2. Step 2: Convert to fraction form
    1,560.26/2,340.66 = 520.40/x
  3. Step 3: Cross multiply
    1,560.26x = 2,340.66 × 520.40
  4. Step 4: Simplify right side
    1,560.26x = 1,218,079.46
  5. Step 5: Solve for x
    x = 1,218,079.46/1,560.26
  6. Step 6: Final answer
    x = 780.69

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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.