Home / 2,427.90-3,645.50-1,389.08

Finding the Fourth Proportional to 2,427.90, 3,645.50 and 1,389.08

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Solution

The fourth proportional to 2,427.90, 3,645.50 and 1,389.08 is: 2,085.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,427.90 : 3,645.50 = 1,389.08 : x
  2. Step 2: Convert to fraction form
    2,427.90/3,645.50 = 1,389.08/x
  3. Step 3: Cross multiply
    2,427.90x = 3,645.50 × 1,389.08
  4. Step 4: Simplify right side
    2,427.90x = 5,063,890.06
  5. Step 5: Solve for x
    x = 5,063,890.06/2,427.90
  6. Step 6: Final answer
    x = 2,085.70

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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.