Home / 2,420.28-3,339.99-1,357.90

Finding the Fourth Proportional to 2,420.28, 3,339.99 and 1,357.90

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Solution

The fourth proportional to 2,420.28, 3,339.99 and 1,357.90 is: 1,873.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.28 : 3,339.99 = 1,357.90 : x
  2. Step 2: Convert to fraction form
    2,420.28/3,339.99 = 1,357.90/x
  3. Step 3: Cross multiply
    2,420.28x = 3,339.99 × 1,357.90
  4. Step 4: Simplify right side
    2,420.28x = 4,535,386.94
  5. Step 5: Solve for x
    x = 4,535,386.94/2,420.28
  6. Step 6: Final answer
    x = 1,873.91

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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.