Home / 1,931.16-2,666.89-1,649.75

Finding the Fourth Proportional to 1,931.16, 2,666.89 and 1,649.75

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Solution

The fourth proportional to 1,931.16, 2,666.89 and 1,649.75 is: 2,278.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.16 : 2,666.89 = 1,649.75 : x
  2. Step 2: Convert to fraction form
    1,931.16/2,666.89 = 1,649.75/x
  3. Step 3: Cross multiply
    1,931.16x = 2,666.89 × 1,649.75
  4. Step 4: Simplify right side
    1,931.16x = 4,399,701.78
  5. Step 5: Solve for x
    x = 4,399,701.78/1,931.16
  6. Step 6: Final answer
    x = 2,278.27

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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.