Home / 1,332.49-1,985.51-1,187.10

Finding the Fourth Proportional to 1,332.49, 1,985.51 and 1,187.10

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Solution

The fourth proportional to 1,332.49, 1,985.51 and 1,187.10 is: 1,768.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.49 : 1,985.51 = 1,187.10 : x
  2. Step 2: Convert to fraction form
    1,332.49/1,985.51 = 1,187.10/x
  3. Step 3: Cross multiply
    1,332.49x = 1,985.51 × 1,187.10
  4. Step 4: Simplify right side
    1,332.49x = 2,356,998.92
  5. Step 5: Solve for x
    x = 2,356,998.92/1,332.49
  6. Step 6: Final answer
    x = 1,768.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.