Home / 3,580.65-4,940.87-1,987.29

Finding the Fourth Proportional to 3,580.65, 4,940.87 and 1,987.29

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Solution

The fourth proportional to 3,580.65, 4,940.87 and 1,987.29 is: 2,742.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.65 : 4,940.87 = 1,987.29 : x
  2. Step 2: Convert to fraction form
    3,580.65/4,940.87 = 1,987.29/x
  3. Step 3: Cross multiply
    3,580.65x = 4,940.87 × 1,987.29
  4. Step 4: Simplify right side
    3,580.65x = 9,818,931.61
  5. Step 5: Solve for x
    x = 9,818,931.61/3,580.65
  6. Step 6: Final answer
    x = 2,742.22

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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.