Home / 2,379.28-3,283.34-1,384.88

Finding the Fourth Proportional to 2,379.28, 3,283.34 and 1,384.88

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Solution

The fourth proportional to 2,379.28, 3,283.34 and 1,384.88 is: 1,911.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,379.28 : 3,283.34 = 1,384.88 : x
  2. Step 2: Convert to fraction form
    2,379.28/3,283.34 = 1,384.88/x
  3. Step 3: Cross multiply
    2,379.28x = 3,283.34 × 1,384.88
  4. Step 4: Simplify right side
    2,379.28x = 4,547,031.90
  5. Step 5: Solve for x
    x = 4,547,031.90/2,379.28
  6. Step 6: Final answer
    x = 1,911.10

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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.