Home / 2,918.28-4,377.78-1,069.32

Finding the Fourth Proportional to 2,918.28, 4,377.78 and 1,069.32

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Solution

The fourth proportional to 2,918.28, 4,377.78 and 1,069.32 is: 1,604.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.28 : 4,377.78 = 1,069.32 : x
  2. Step 2: Convert to fraction form
    2,918.28/4,377.78 = 1,069.32/x
  3. Step 3: Cross multiply
    2,918.28x = 4,377.78 × 1,069.32
  4. Step 4: Simplify right side
    2,918.28x = 4,681,247.71
  5. Step 5: Solve for x
    x = 4,681,247.71/2,918.28
  6. Step 6: Final answer
    x = 1,604.11

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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.