Home / 5,123.84-7,070.38-2,885.44

Finding the Fourth Proportional to 5,123.84, 7,070.38 and 2,885.44

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Solution

The fourth proportional to 5,123.84, 7,070.38 and 2,885.44 is: 3,981.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.84 : 7,070.38 = 2,885.44 : x
  2. Step 2: Convert to fraction form
    5,123.84/7,070.38 = 2,885.44/x
  3. Step 3: Cross multiply
    5,123.84x = 7,070.38 × 2,885.44
  4. Step 4: Simplify right side
    5,123.84x = 20,401,157.27
  5. Step 5: Solve for x
    x = 20,401,157.27/5,123.84
  6. Step 6: Final answer
    x = 3,981.61

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Half scale
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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.