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Finding the Fourth Proportional to 4,877.40, 7,316.10 and 1,957.80

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Solution

The fourth proportional to 4,877.40, 7,316.10 and 1,957.80 is: 2,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,877.40 : 7,316.10 = 1,957.80 : x
  2. Step 2: Convert to fraction form
    4,877.40/7,316.10 = 1,957.80/x
  3. Step 3: Cross multiply
    4,877.40x = 7,316.10 × 1,957.80
  4. Step 4: Simplify right side
    4,877.40x = 14,323,460.58
  5. Step 5: Solve for x
    x = 14,323,460.58/4,877.40
  6. Step 6: Final answer
    x = 2,936.70

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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.