Home / 5,162.88-7,124.80-2,805.06

Finding the Fourth Proportional to 5,162.88, 7,124.80 and 2,805.06

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Solution

The fourth proportional to 5,162.88, 7,124.80 and 2,805.06 is: 3,871.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,162.88 : 7,124.80 = 2,805.06 : x
  2. Step 2: Convert to fraction form
    5,162.88/7,124.80 = 2,805.06/x
  3. Step 3: Cross multiply
    5,162.88x = 7,124.80 × 2,805.06
  4. Step 4: Simplify right side
    5,162.88x = 19,985,491.49
  5. Step 5: Solve for x
    x = 19,985,491.49/5,162.88
  6. Step 6: Final answer
    x = 3,871.00

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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.