Home / 1,555.11-2,146.10-965.84

Finding the Fourth Proportional to 1,555.11, 2,146.10 and 965.84

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Solution

The fourth proportional to 1,555.11, 2,146.10 and 965.84 is: 1,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.11 : 2,146.10 = 965.84 : x
  2. Step 2: Convert to fraction form
    1,555.11/2,146.10 = 965.84/x
  3. Step 3: Cross multiply
    1,555.11x = 2,146.10 × 965.84
  4. Step 4: Simplify right side
    1,555.11x = 2,072,773.66
  5. Step 5: Solve for x
    x = 2,072,773.66/1,555.11
  6. Step 6: Final answer
    x = 1,332.88

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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.