Home / 3,581.06-4,941.80-1,987.70

Finding the Fourth Proportional to 3,581.06, 4,941.80 and 1,987.70

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Solution

The fourth proportional to 3,581.06, 4,941.80 and 1,987.70 is: 2,743.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,581.06 : 4,941.80 = 1,987.70 : x
  2. Step 2: Convert to fraction form
    3,581.06/4,941.80 = 1,987.70/x
  3. Step 3: Cross multiply
    3,581.06x = 4,941.80 × 1,987.70
  4. Step 4: Simplify right side
    3,581.06x = 9,822,828.21
  5. Step 5: Solve for x
    x = 9,822,828.21/3,581.06
  6. Step 6: Final answer
    x = 2,743.00

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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.