Home / 1,555.40-2,144.98-966.13

Finding the Fourth Proportional to 1,555.40, 2,144.98 and 966.13

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Solution

The fourth proportional to 1,555.40, 2,144.98 and 966.13 is: 1,332.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.40 : 2,144.98 = 966.13 : x
  2. Step 2: Convert to fraction form
    1,555.40/2,144.98 = 966.13/x
  3. Step 3: Cross multiply
    1,555.40x = 2,144.98 × 966.13
  4. Step 4: Simplify right side
    1,555.40x = 2,072,325.37
  5. Step 5: Solve for x
    x = 2,072,325.37/1,555.40
  6. Step 6: Final answer
    x = 1,332.34

Related Problems

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Half scale
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Double scale
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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.