Home / 2,152.90-2,971.65-1,367.20

Finding the Fourth Proportional to 2,152.90, 2,971.65 and 1,367.20

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Solution

The fourth proportional to 2,152.90, 2,971.65 and 1,367.20 is: 1,887.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.90 : 2,971.65 = 1,367.20 : x
  2. Step 2: Convert to fraction form
    2,152.90/2,971.65 = 1,367.20/x
  3. Step 3: Cross multiply
    2,152.90x = 2,971.65 × 1,367.20
  4. Step 4: Simplify right side
    2,152.90x = 4,062,839.88
  5. Step 5: Solve for x
    x = 4,062,839.88/2,152.90
  6. Step 6: Final answer
    x = 1,887.15

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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.