Home / 4,689.10-6,471.66-2,921.28

Finding the Fourth Proportional to 4,689.10, 6,471.66 and 2,921.28

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Solution

The fourth proportional to 4,689.10, 6,471.66 and 2,921.28 is: 4,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.10 : 6,471.66 = 2,921.28 : x
  2. Step 2: Convert to fraction form
    4,689.10/6,471.66 = 2,921.28/x
  3. Step 3: Cross multiply
    4,689.10x = 6,471.66 × 2,921.28
  4. Step 4: Simplify right side
    4,689.10x = 18,905,498.57
  5. Step 5: Solve for x
    x = 18,905,498.57/4,689.10
  6. Step 6: Final answer
    x = 4,031.80

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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.