Home / 1,867.90-2,578.81-1,660.30

Finding the Fourth Proportional to 1,867.90, 2,578.81 and 1,660.30

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Solution

The fourth proportional to 1,867.90, 2,578.81 and 1,660.30 is: 2,292.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.90 : 2,578.81 = 1,660.30 : x
  2. Step 2: Convert to fraction form
    1,867.90/2,578.81 = 1,660.30/x
  3. Step 3: Cross multiply
    1,867.90x = 2,578.81 × 1,660.30
  4. Step 4: Simplify right side
    1,867.90x = 4,281,598.24
  5. Step 5: Solve for x
    x = 4,281,598.24/1,867.90
  6. Step 6: Final answer
    x = 2,292.20

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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.