Home / 6,870.20-9,480.92-3,886.32

Finding the Fourth Proportional to 6,870.20, 9,480.92 and 3,886.32

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Solution

The fourth proportional to 6,870.20, 9,480.92 and 3,886.32 is: 5,363.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,870.20 : 9,480.92 = 3,886.32 : x
  2. Step 2: Convert to fraction form
    6,870.20/9,480.92 = 3,886.32/x
  3. Step 3: Cross multiply
    6,870.20x = 9,480.92 × 3,886.32
  4. Step 4: Simplify right side
    6,870.20x = 36,845,889.01
  5. Step 5: Solve for x
    x = 36,845,889.01/6,870.20
  6. Step 6: Final answer
    x = 5,363.15

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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.