Home / 1,760.40-2,429.64-1,130.76

Finding the Fourth Proportional to 1,760.40, 2,429.64 and 1,130.76

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Solution

The fourth proportional to 1,760.40, 2,429.64 and 1,130.76 is: 1,560.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.40 : 2,429.64 = 1,130.76 : x
  2. Step 2: Convert to fraction form
    1,760.40/2,429.64 = 1,130.76/x
  3. Step 3: Cross multiply
    1,760.40x = 2,429.64 × 1,130.76
  4. Step 4: Simplify right side
    1,760.40x = 2,747,339.73
  5. Step 5: Solve for x
    x = 2,747,339.73/1,760.40
  6. Step 6: Final answer
    x = 1,560.63

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.