Home / 2,985.48-4,119.99-1,641.12

Finding the Fourth Proportional to 2,985.48, 4,119.99 and 1,641.12

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Solution

The fourth proportional to 2,985.48, 4,119.99 and 1,641.12 is: 2,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.48 : 4,119.99 = 1,641.12 : x
  2. Step 2: Convert to fraction form
    2,985.48/4,119.99 = 1,641.12/x
  3. Step 3: Cross multiply
    2,985.48x = 4,119.99 × 1,641.12
  4. Step 4: Simplify right side
    2,985.48x = 6,761,397.99
  5. Step 5: Solve for x
    x = 6,761,397.99/2,985.48
  6. Step 6: Final answer
    x = 2,264.76

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1.5x scale

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.