Home / 2,318.68-3,478.02-1,225.18

Finding the Fourth Proportional to 2,318.68, 3,478.02 and 1,225.18

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Solution

The fourth proportional to 2,318.68, 3,478.02 and 1,225.18 is: 1,837.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.68 : 3,478.02 = 1,225.18 : x
  2. Step 2: Convert to fraction form
    2,318.68/3,478.02 = 1,225.18/x
  3. Step 3: Cross multiply
    2,318.68x = 3,478.02 × 1,225.18
  4. Step 4: Simplify right side
    2,318.68x = 4,261,200.54
  5. Step 5: Solve for x
    x = 4,261,200.54/2,318.68
  6. Step 6: Final answer
    x = 1,837.77

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.