Home / 1,641.87-2,266.21-934.13

Finding the Fourth Proportional to 1,641.87, 2,266.21 and 934.13

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Solution

The fourth proportional to 1,641.87, 2,266.21 and 934.13 is: 1,289.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641.87 : 2,266.21 = 934.13 : x
  2. Step 2: Convert to fraction form
    1,641.87/2,266.21 = 934.13/x
  3. Step 3: Cross multiply
    1,641.87x = 2,266.21 × 934.13
  4. Step 4: Simplify right side
    1,641.87x = 2,116,931.42
  5. Step 5: Solve for x
    x = 2,116,931.42/1,641.87
  6. Step 6: Final answer
    x = 1,289.34

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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.