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Finding the Fourth Proportional to 4,869.16, 6,719.56 and 2,955

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Solution

The fourth proportional to 4,869.16, 6,719.56 and 2,955 is: 4,077.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.16 : 6,719.56 = 2,955 : x
  2. Step 2: Convert to fraction form
    4,869.16/6,719.56 = 2,955/x
  3. Step 3: Cross multiply
    4,869.16x = 6,719.56 × 2,955
  4. Step 4: Simplify right side
    4,869.16x = 19,856,299.80
  5. Step 5: Solve for x
    x = 19,856,299.80/4,869.16
  6. Step 6: Final answer
    x = 4,077.97

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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.