Home / 3,165.50-4,370.02-1,987.76

Finding the Fourth Proportional to 3,165.50, 4,370.02 and 1,987.76

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Solution

The fourth proportional to 3,165.50, 4,370.02 and 1,987.76 is: 2,744.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,165.50 : 4,370.02 = 1,987.76 : x
  2. Step 2: Convert to fraction form
    3,165.50/4,370.02 = 1,987.76/x
  3. Step 3: Cross multiply
    3,165.50x = 4,370.02 × 1,987.76
  4. Step 4: Simplify right side
    3,165.50x = 8,686,550.96
  5. Step 5: Solve for x
    x = 8,686,550.96/3,165.50
  6. Step 6: Final answer
    x = 2,744.13

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1.5x scale

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.