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Finding the Fourth Proportional to 5,039.35, 7,559.03 and 1,918.63

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Solution

The fourth proportional to 5,039.35, 7,559.03 and 1,918.63 is: 2,877.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,039.35 : 7,559.03 = 1,918.63 : x
  2. Step 2: Convert to fraction form
    5,039.35/7,559.03 = 1,918.63/x
  3. Step 3: Cross multiply
    5,039.35x = 7,559.03 × 1,918.63
  4. Step 4: Simplify right side
    5,039.35x = 14,502,981.73
  5. Step 5: Solve for x
    x = 14,502,981.73/5,039.35
  6. Step 6: Final answer
    x = 2,877.95

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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.