Home / 1,779.47-2,666.42-1,340.21

Finding the Fourth Proportional to 1,779.47, 2,666.42 and 1,340.21

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Solution

The fourth proportional to 1,779.47, 2,666.42 and 1,340.21 is: 2,008.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.47 : 2,666.42 = 1,340.21 : x
  2. Step 2: Convert to fraction form
    1,779.47/2,666.42 = 1,340.21/x
  3. Step 3: Cross multiply
    1,779.47x = 2,666.42 × 1,340.21
  4. Step 4: Simplify right side
    1,779.47x = 3,573,567.74
  5. Step 5: Solve for x
    x = 3,573,567.74/1,779.47
  6. Step 6: Final answer
    x = 2,008.22

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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.