Home / 3,078.01-4,242.58-2,328.49

Finding the Fourth Proportional to 3,078.01, 4,242.58 and 2,328.49

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Solution

The fourth proportional to 3,078.01, 4,242.58 and 2,328.49 is: 3,209.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.01 : 4,242.58 = 2,328.49 : x
  2. Step 2: Convert to fraction form
    3,078.01/4,242.58 = 2,328.49/x
  3. Step 3: Cross multiply
    3,078.01x = 4,242.58 × 2,328.49
  4. Step 4: Simplify right side
    3,078.01x = 9,878,805.10
  5. Step 5: Solve for x
    x = 9,878,805.10/3,078.01
  6. Step 6: Final answer
    x = 3,209.48

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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.