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Finding the Fourth Proportional to 8,615.84, 11,886.48 and 5,298.08

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Solution

The fourth proportional to 8,615.84, 11,886.48 and 5,298.08 is: 7,309.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,615.84 : 11,886.48 = 5,298.08 : x
  2. Step 2: Convert to fraction form
    8,615.84/11,886.48 = 5,298.08/x
  3. Step 3: Cross multiply
    8,615.84x = 11,886.48 × 5,298.08
  4. Step 4: Simplify right side
    8,615.84x = 62,975,521.96
  5. Step 5: Solve for x
    x = 62,975,521.96/8,615.84
  6. Step 6: Final answer
    x = 7,309.27

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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.