Home / 3,618.30-5,428.12-2,386.74

Finding the Fourth Proportional to 3,618.30, 5,428.12 and 2,386.74

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Solution

The fourth proportional to 3,618.30, 5,428.12 and 2,386.74 is: 3,580.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.30 : 5,428.12 = 2,386.74 : x
  2. Step 2: Convert to fraction form
    3,618.30/5,428.12 = 2,386.74/x
  3. Step 3: Cross multiply
    3,618.30x = 5,428.12 × 2,386.74
  4. Step 4: Simplify right side
    3,618.30x = 12,955,511.13
  5. Step 5: Solve for x
    x = 12,955,511.13/3,618.30
  6. Step 6: Final answer
    x = 3,580.55

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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.