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Finding the Fourth Proportional to 5,405.06, 7,458.99 and 2,921.06

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Solution

The fourth proportional to 5,405.06, 7,458.99 and 2,921.06 is: 4,031.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.06 : 7,458.99 = 2,921.06 : x
  2. Step 2: Convert to fraction form
    5,405.06/7,458.99 = 2,921.06/x
  3. Step 3: Cross multiply
    5,405.06x = 7,458.99 × 2,921.06
  4. Step 4: Simplify right side
    5,405.06x = 21,788,165.02
  5. Step 5: Solve for x
    x = 21,788,165.02/5,405.06
  6. Step 6: Final answer
    x = 4,031.07

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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.