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Finding the Fourth Proportional to 7,798.01, 11,689.72 and 2,866.32

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Solution

The fourth proportional to 7,798.01, 11,689.72 and 2,866.32 is: 4,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,798.01 : 11,689.72 = 2,866.32 : x
  2. Step 2: Convert to fraction form
    7,798.01/11,689.72 = 2,866.32/x
  3. Step 3: Cross multiply
    7,798.01x = 11,689.72 × 2,866.32
  4. Step 4: Simplify right side
    7,798.01x = 33,506,471.06
  5. Step 5: Solve for x
    x = 33,506,471.06/7,798.01
  6. Step 6: Final answer
    x = 4,296.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.