Home / 3,031.61-4,547.43-1,979.80

Finding the Fourth Proportional to 3,031.61, 4,547.43 and 1,979.80

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Solution

The fourth proportional to 3,031.61, 4,547.43 and 1,979.80 is: 2,969.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,031.61 : 4,547.43 = 1,979.80 : x
  2. Step 2: Convert to fraction form
    3,031.61/4,547.43 = 1,979.80/x
  3. Step 3: Cross multiply
    3,031.61x = 4,547.43 × 1,979.80
  4. Step 4: Simplify right side
    3,031.61x = 9,002,990.55
  5. Step 5: Solve for x
    x = 9,002,990.55/3,031.61
  6. Step 6: Final answer
    x = 2,969.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.