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Finding the Fourth Proportional to 9,395.79, 12,965.31 and 5,618.19

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Solution

The fourth proportional to 9,395.79, 12,965.31 and 5,618.19 is: 7,752.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,395.79 : 12,965.31 = 5,618.19 : x
  2. Step 2: Convert to fraction form
    9,395.79/12,965.31 = 5,618.19/x
  3. Step 3: Cross multiply
    9,395.79x = 12,965.31 × 5,618.19
  4. Step 4: Simplify right side
    9,395.79x = 72,841,574.99
  5. Step 5: Solve for x
    x = 72,841,574.99/9,395.79
  6. Step 6: Final answer
    x = 7,752.58

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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.