Home / 3,480.20-4,802.72-1,988.32

Finding the Fourth Proportional to 3,480.20, 4,802.72 and 1,988.32

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Solution

The fourth proportional to 3,480.20, 4,802.72 and 1,988.32 is: 2,743.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.20 : 4,802.72 = 1,988.32 : x
  2. Step 2: Convert to fraction form
    3,480.20/4,802.72 = 1,988.32/x
  3. Step 3: Cross multiply
    3,480.20x = 4,802.72 × 1,988.32
  4. Step 4: Simplify right side
    3,480.20x = 9,549,344.23
  5. Step 5: Solve for x
    x = 9,549,344.23/3,480.20
  6. Step 6: Final answer
    x = 2,743.91

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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.