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Finding the Fourth Proportional to 7,798.90, 10,763.12 and 4,442.76

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Solution

The fourth proportional to 7,798.90, 10,763.12 and 4,442.76 is: 6,131.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.90 : 10,763.12 = 4,442.76 : x
  2. Step 2: Convert to fraction form
    7,798.90/10,763.12 = 4,442.76/x
  3. Step 3: Cross multiply
    7,798.90x = 10,763.12 × 4,442.76
  4. Step 4: Simplify right side
    7,798.90x = 47,817,959.01
  5. Step 5: Solve for x
    x = 47,817,959.01/7,798.90
  6. Step 6: Final answer
    x = 6,131.37

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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.