Home / 2,980.10-4,470.65-1,031.78

Finding the Fourth Proportional to 2,980.10, 4,470.65 and 1,031.78

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Solution

The fourth proportional to 2,980.10, 4,470.65 and 1,031.78 is: 1,547.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.10 : 4,470.65 = 1,031.78 : x
  2. Step 2: Convert to fraction form
    2,980.10/4,470.65 = 1,031.78/x
  3. Step 3: Cross multiply
    2,980.10x = 4,470.65 × 1,031.78
  4. Step 4: Simplify right side
    2,980.10x = 4,612,727.26
  5. Step 5: Solve for x
    x = 4,612,727.26/2,980.10
  6. Step 6: Final answer
    x = 1,547.84

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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.