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Finding the Fourth Proportional to 7,798.38, 10,768.95 and 5,008.74

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Solution

The fourth proportional to 7,798.38, 10,768.95 and 5,008.74 is: 6,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.38 : 10,768.95 = 5,008.74 : x
  2. Step 2: Convert to fraction form
    7,798.38/10,768.95 = 5,008.74/x
  3. Step 3: Cross multiply
    7,798.38x = 10,768.95 × 5,008.74
  4. Step 4: Simplify right side
    7,798.38x = 53,938,870.62
  5. Step 5: Solve for x
    x = 53,938,870.62/7,798.38
  6. Step 6: Final answer
    x = 6,916.68

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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.