Home / 1,155.90-1,593.45-919.93

Finding the Fourth Proportional to 1,155.90, 1,593.45 and 919.93

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Solution

The fourth proportional to 1,155.90, 1,593.45 and 919.93 is: 1,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.90 : 1,593.45 = 919.93 : x
  2. Step 2: Convert to fraction form
    1,155.90/1,593.45 = 919.93/x
  3. Step 3: Cross multiply
    1,155.90x = 1,593.45 × 919.93
  4. Step 4: Simplify right side
    1,155.90x = 1,465,862.46
  5. Step 5: Solve for x
    x = 1,465,862.46/1,155.90
  6. Step 6: Final answer
    x = 1,268.16

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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.