Home / 5,261.40-7,888.10-2,666.20

Finding the Fourth Proportional to 5,261.40, 7,888.10 and 2,666.20

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Solution

The fourth proportional to 5,261.40, 7,888.10 and 2,666.20 is: 3,997.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,261.40 : 7,888.10 = 2,666.20 : x
  2. Step 2: Convert to fraction form
    5,261.40/7,888.10 = 2,666.20/x
  3. Step 3: Cross multiply
    5,261.40x = 7,888.10 × 2,666.20
  4. Step 4: Simplify right side
    5,261.40x = 21,031,252.22
  5. Step 5: Solve for x
    x = 21,031,252.22/5,261.40
  6. Step 6: Final answer
    x = 3,997.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.