Home / 3,870.04-5,340.24-2,191.18

Finding the Fourth Proportional to 3,870.04, 5,340.24 and 2,191.18

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Solution

The fourth proportional to 3,870.04, 5,340.24 and 2,191.18 is: 3,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.04 : 5,340.24 = 2,191.18 : x
  2. Step 2: Convert to fraction form
    3,870.04/5,340.24 = 2,191.18/x
  3. Step 3: Cross multiply
    3,870.04x = 5,340.24 × 2,191.18
  4. Step 4: Simplify right side
    3,870.04x = 11,701,427.08
  5. Step 5: Solve for x
    x = 11,701,427.08/3,870.04
  6. Step 6: Final answer
    x = 3,023.59

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Half scale
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Double scale
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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.