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Finding the Fourth Proportional to 9,842.39, 13,582.63 and 5,366.21

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Solution

The fourth proportional to 9,842.39, 13,582.63 and 5,366.21 is: 7,405.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,842.39 : 13,582.63 = 5,366.21 : x
  2. Step 2: Convert to fraction form
    9,842.39/13,582.63 = 5,366.21/x
  3. Step 3: Cross multiply
    9,842.39x = 13,582.63 × 5,366.21
  4. Step 4: Simplify right side
    9,842.39x = 72,887,244.93
  5. Step 5: Solve for x
    x = 72,887,244.93/9,842.39
  6. Step 6: Final answer
    x = 7,405.45

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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.