Home / 1,423.20-1,965.60-1,354.08

Finding the Fourth Proportional to 1,423.20, 1,965.60 and 1,354.08

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Solution

The fourth proportional to 1,423.20, 1,965.60 and 1,354.08 is: 1,870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423.20 : 1,965.60 = 1,354.08 : x
  2. Step 2: Convert to fraction form
    1,423.20/1,965.60 = 1,354.08/x
  3. Step 3: Cross multiply
    1,423.20x = 1,965.60 × 1,354.08
  4. Step 4: Simplify right side
    1,423.20x = 2,661,579.65
  5. Step 5: Solve for x
    x = 2,661,579.65/1,423.20
  6. Step 6: Final answer
    x = 1,870.14

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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.