Home / 3,480.10-4,802.85-1,988.02

Finding the Fourth Proportional to 3,480.10, 4,802.85 and 1,988.02

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Solution

The fourth proportional to 3,480.10, 4,802.85 and 1,988.02 is: 2,743.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.10 : 4,802.85 = 1,988.02 : x
  2. Step 2: Convert to fraction form
    3,480.10/4,802.85 = 1,988.02/x
  3. Step 3: Cross multiply
    3,480.10x = 4,802.85 × 1,988.02
  4. Step 4: Simplify right side
    3,480.10x = 9,548,161.86
  5. Step 5: Solve for x
    x = 9,548,161.86/3,480.10
  6. Step 6: Final answer
    x = 2,743.65

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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.