Home / 1,439.18-2,159.60-606.18

Finding the Fourth Proportional to 1,439.18, 2,159.60 and 606.18

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Solution

The fourth proportional to 1,439.18, 2,159.60 and 606.18 is: 909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.18 : 2,159.60 = 606.18 : x
  2. Step 2: Convert to fraction form
    1,439.18/2,159.60 = 606.18/x
  3. Step 3: Cross multiply
    1,439.18x = 2,159.60 × 606.18
  4. Step 4: Simplify right side
    1,439.18x = 1,309,106.33
  5. Step 5: Solve for x
    x = 1,309,106.33/1,439.18
  6. Step 6: Final answer
    x = 909.62

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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.