Home / 5,278.83-7,285.16-2,921.07

Finding the Fourth Proportional to 5,278.83, 7,285.16 and 2,921.07

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Solution

The fourth proportional to 5,278.83, 7,285.16 and 2,921.07 is: 4,031.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.83 : 7,285.16 = 2,921.07 : x
  2. Step 2: Convert to fraction form
    5,278.83/7,285.16 = 2,921.07/x
  3. Step 3: Cross multiply
    5,278.83x = 7,285.16 × 2,921.07
  4. Step 4: Simplify right side
    5,278.83x = 21,280,447.72
  5. Step 5: Solve for x
    x = 21,280,447.72/5,278.83
  6. Step 6: Final answer
    x = 4,031.28

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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.