Home / 1,666.90-2,500.34-1,565.40

Finding the Fourth Proportional to 1,666.90, 2,500.34 and 1,565.40

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Solution

The fourth proportional to 1,666.90, 2,500.34 and 1,565.40 is: 2,348.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.90 : 2,500.34 = 1,565.40 : x
  2. Step 2: Convert to fraction form
    1,666.90/2,500.34 = 1,565.40/x
  3. Step 3: Cross multiply
    1,666.90x = 2,500.34 × 1,565.40
  4. Step 4: Simplify right side
    1,666.90x = 3,914,032.24
  5. Step 5: Solve for x
    x = 3,914,032.24/1,666.90
  6. Step 6: Final answer
    x = 2,348.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.