Home / 5,278.64-7,284.67-2,921.00

Finding the Fourth Proportional to 5,278.64, 7,284.67 and 2,921.00

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Solution

The fourth proportional to 5,278.64, 7,284.67 and 2,921.00 is: 4,031.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.64 : 7,284.67 = 2,921.00 : x
  2. Step 2: Convert to fraction form
    5,278.64/7,284.67 = 2,921.00/x
  3. Step 3: Cross multiply
    5,278.64x = 7,284.67 × 2,921.00
  4. Step 4: Simplify right side
    5,278.64x = 21,278,477.34
  5. Step 5: Solve for x
    x = 21,278,477.34/5,278.64
  6. Step 6: Final answer
    x = 4,031.06

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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.