Home / 1,987.02-2,740.86-1,652.49

Finding the Fourth Proportional to 1,987.02, 2,740.86 and 1,652.49

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Solution

The fourth proportional to 1,987.02, 2,740.86 and 1,652.49 is: 2,279.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.02 : 2,740.86 = 1,652.49 : x
  2. Step 2: Convert to fraction form
    1,987.02/2,740.86 = 1,652.49/x
  3. Step 3: Cross multiply
    1,987.02x = 2,740.86 × 1,652.49
  4. Step 4: Simplify right side
    1,987.02x = 4,529,243.74
  5. Step 5: Solve for x
    x = 4,529,243.74/1,987.02
  6. Step 6: Final answer
    x = 2,279.42

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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.