Home / 5,243.40-7,236.08-2,885.76

Finding the Fourth Proportional to 5,243.40, 7,236.08 and 2,885.76

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Solution

The fourth proportional to 5,243.40, 7,236.08 and 2,885.76 is: 3,982.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.40 : 7,236.08 = 2,885.76 : x
  2. Step 2: Convert to fraction form
    5,243.40/7,236.08 = 2,885.76/x
  3. Step 3: Cross multiply
    5,243.40x = 7,236.08 × 2,885.76
  4. Step 4: Simplify right side
    5,243.40x = 20,881,590.22
  5. Step 5: Solve for x
    x = 20,881,590.22/5,243.40
  6. Step 6: Final answer
    x = 3,982.45

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Double scale
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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.