Home / 1,332.81-1,838.32-1,155.45

Finding the Fourth Proportional to 1,332.81, 1,838.32 and 1,155.45

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Solution

The fourth proportional to 1,332.81, 1,838.32 and 1,155.45 is: 1,593.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.81 : 1,838.32 = 1,155.45 : x
  2. Step 2: Convert to fraction form
    1,332.81/1,838.32 = 1,155.45/x
  3. Step 3: Cross multiply
    1,332.81x = 1,838.32 × 1,155.45
  4. Step 4: Simplify right side
    1,332.81x = 2,124,090.55
  5. Step 5: Solve for x
    x = 2,124,090.55/1,332.81
  6. Step 6: Final answer
    x = 1,593.70

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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.