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Finding the Fourth Proportional to 6,870.39, 9,480.88 and 3,726.51

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Solution

The fourth proportional to 6,870.39, 9,480.88 and 3,726.51 is: 5,142.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.39 : 9,480.88 = 3,726.51 : x
  2. Step 2: Convert to fraction form
    6,870.39/9,480.88 = 3,726.51/x
  3. Step 3: Cross multiply
    6,870.39x = 9,480.88 × 3,726.51
  4. Step 4: Simplify right side
    6,870.39x = 35,330,594.13
  5. Step 5: Solve for x
    x = 35,330,594.13/6,870.39
  6. Step 6: Final answer
    x = 5,142.44

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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.