Home / 1,988.10-2,740.38-1,567.74

Finding the Fourth Proportional to 1,988.10, 2,740.38 and 1,567.74

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Solution

The fourth proportional to 1,988.10, 2,740.38 and 1,567.74 is: 2,160.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.10 : 2,740.38 = 1,567.74 : x
  2. Step 2: Convert to fraction form
    1,988.10/2,740.38 = 1,567.74/x
  3. Step 3: Cross multiply
    1,988.10x = 2,740.38 × 1,567.74
  4. Step 4: Simplify right side
    1,988.10x = 4,296,203.34
  5. Step 5: Solve for x
    x = 4,296,203.34/1,988.10
  6. Step 6: Final answer
    x = 2,160.96

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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.