Home / 1,345.60-2,013.76-935.20

Finding the Fourth Proportional to 1,345.60, 2,013.76 and 935.20

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Solution

The fourth proportional to 1,345.60, 2,013.76 and 935.20 is: 1,399.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.60 : 2,013.76 = 935.20 : x
  2. Step 2: Convert to fraction form
    1,345.60/2,013.76 = 935.20/x
  3. Step 3: Cross multiply
    1,345.60x = 2,013.76 × 935.20
  4. Step 4: Simplify right side
    1,345.60x = 1,883,268.35
  5. Step 5: Solve for x
    x = 1,883,268.35/1,345.60
  6. Step 6: Final answer
    x = 1,399.58

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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.