Home / 1,555.18-2,146.05-965.50

Finding the Fourth Proportional to 1,555.18, 2,146.05 and 965.50

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Solution

The fourth proportional to 1,555.18, 2,146.05 and 965.50 is: 1,332.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.18 : 2,146.05 = 965.50 : x
  2. Step 2: Convert to fraction form
    1,555.18/2,146.05 = 965.50/x
  3. Step 3: Cross multiply
    1,555.18x = 2,146.05 × 965.50
  4. Step 4: Simplify right side
    1,555.18x = 2,072,011.28
  5. Step 5: Solve for x
    x = 2,072,011.28/1,555.18
  6. Step 6: Final answer
    x = 1,332.33

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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.