Home / 3,979.28-5,492.88-3,417.49

Finding the Fourth Proportional to 3,979.28, 5,492.88 and 3,417.49

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Solution

The fourth proportional to 3,979.28, 5,492.88 and 3,417.49 is: 4,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.28 : 5,492.88 = 3,417.49 : x
  2. Step 2: Convert to fraction form
    3,979.28/5,492.88 = 3,417.49/x
  3. Step 3: Cross multiply
    3,979.28x = 5,492.88 × 3,417.49
  4. Step 4: Simplify right side
    3,979.28x = 18,771,848.74
  5. Step 5: Solve for x
    x = 18,771,848.74/3,979.28
  6. Step 6: Final answer
    x = 4,717.40

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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.