Home / 1,555.57-2,146.69-966.11

Finding the Fourth Proportional to 1,555.57, 2,146.69 and 966.11

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Solution

The fourth proportional to 1,555.57, 2,146.69 and 966.11 is: 1,333.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.57 : 2,146.69 = 966.11 : x
  2. Step 2: Convert to fraction form
    1,555.57/2,146.69 = 966.11/x
  3. Step 3: Cross multiply
    1,555.57x = 2,146.69 × 966.11
  4. Step 4: Simplify right side
    1,555.57x = 2,073,927.74
  5. Step 5: Solve for x
    x = 2,073,927.74/1,555.57
  6. Step 6: Final answer
    x = 1,333.22

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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.