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Finding the Fourth Proportional to 7,938.95, 10,970.03 and 5,696.90

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Solution

The fourth proportional to 7,938.95, 10,970.03 and 5,696.90 is: 7,871.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.95 : 10,970.03 = 5,696.90 : x
  2. Step 2: Convert to fraction form
    7,938.95/10,970.03 = 5,696.90/x
  3. Step 3: Cross multiply
    7,938.95x = 10,970.03 × 5,696.90
  4. Step 4: Simplify right side
    7,938.95x = 62,495,164.44
  5. Step 5: Solve for x
    x = 62,495,164.44/7,938.95
  6. Step 6: Final answer
    x = 7,871.97

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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.