Home / 5,235.98-7,225.80-2,878.28

Finding the Fourth Proportional to 5,235.98, 7,225.80 and 2,878.28

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Solution

The fourth proportional to 5,235.98, 7,225.80 and 2,878.28 is: 3,972.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,235.98 : 7,225.80 = 2,878.28 : x
  2. Step 2: Convert to fraction form
    5,235.98/7,225.80 = 2,878.28/x
  3. Step 3: Cross multiply
    5,235.98x = 7,225.80 × 2,878.28
  4. Step 4: Simplify right side
    5,235.98x = 20,797,875.62
  5. Step 5: Solve for x
    x = 20,797,875.62/5,235.98
  6. Step 6: Final answer
    x = 3,972.11

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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.