Home / 1,931.70-2,666.64-1,862.45

Finding the Fourth Proportional to 1,931.70, 2,666.64 and 1,862.45

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Solution

The fourth proportional to 1,931.70, 2,666.64 and 1,862.45 is: 2,571.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.70 : 2,666.64 = 1,862.45 : x
  2. Step 2: Convert to fraction form
    1,931.70/2,666.64 = 1,862.45/x
  3. Step 3: Cross multiply
    1,931.70x = 2,666.64 × 1,862.45
  4. Step 4: Simplify right side
    1,931.70x = 4,966,470.33
  5. Step 5: Solve for x
    x = 4,966,470.33/1,931.70
  6. Step 6: Final answer
    x = 2,571.04

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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.