Home / 5,143.42-7,710.27-1,855.63

Finding the Fourth Proportional to 5,143.42, 7,710.27 and 1,855.63

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Solution

The fourth proportional to 5,143.42, 7,710.27 and 1,855.63 is: 2,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.42 : 7,710.27 = 1,855.63 : x
  2. Step 2: Convert to fraction form
    5,143.42/7,710.27 = 1,855.63/x
  3. Step 3: Cross multiply
    5,143.42x = 7,710.27 × 1,855.63
  4. Step 4: Simplify right side
    5,143.42x = 14,307,408.32
  5. Step 5: Solve for x
    x = 14,307,408.32/5,143.42
  6. Step 6: Final answer
    x = 2,781.69

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.