Home / 5,245.62-7,239.40-2,888.20

Finding the Fourth Proportional to 5,245.62, 7,239.40 and 2,888.20

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Solution

The fourth proportional to 5,245.62, 7,239.40 and 2,888.20 is: 3,985.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.62 : 7,239.40 = 2,888.20 : x
  2. Step 2: Convert to fraction form
    5,245.62/7,239.40 = 2,888.20/x
  3. Step 3: Cross multiply
    5,245.62x = 7,239.40 × 2,888.20
  4. Step 4: Simplify right side
    5,245.62x = 20,908,835.08
  5. Step 5: Solve for x
    x = 20,908,835.08/5,245.62
  6. Step 6: Final answer
    x = 3,985.96

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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.