Home / 2,985.28-4,119.69-1,659

Finding the Fourth Proportional to 2,985.28, 4,119.69 and 1,659

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Solution

The fourth proportional to 2,985.28, 4,119.69 and 1,659 is: 2,289.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.28 : 4,119.69 = 1,659 : x
  2. Step 2: Convert to fraction form
    2,985.28/4,119.69 = 1,659/x
  3. Step 3: Cross multiply
    2,985.28x = 4,119.69 × 1,659
  4. Step 4: Simplify right side
    2,985.28x = 6,834,565.71
  5. Step 5: Solve for x
    x = 6,834,565.71/2,985.28
  6. Step 6: Final answer
    x = 2,289.42

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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.