Home / 3,056.28-4,218.36-1,938.76

Finding the Fourth Proportional to 3,056.28, 4,218.36 and 1,938.76

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Solution

The fourth proportional to 3,056.28, 4,218.36 and 1,938.76 is: 2,675.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056.28 : 4,218.36 = 1,938.76 : x
  2. Step 2: Convert to fraction form
    3,056.28/4,218.36 = 1,938.76/x
  3. Step 3: Cross multiply
    3,056.28x = 4,218.36 × 1,938.76
  4. Step 4: Simplify right side
    3,056.28x = 8,178,387.63
  5. Step 5: Solve for x
    x = 8,178,387.63/3,056.28
  6. Step 6: Final answer
    x = 2,675.93

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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.