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Finding the Fourth Proportional to 8,364.98, 12,547.16 and 2,818.20

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Solution

The fourth proportional to 8,364.98, 12,547.16 and 2,818.20 is: 4,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.98 : 12,547.16 = 2,818.20 : x
  2. Step 2: Convert to fraction form
    8,364.98/12,547.16 = 2,818.20/x
  3. Step 3: Cross multiply
    8,364.98x = 12,547.16 × 2,818.20
  4. Step 4: Simplify right side
    8,364.98x = 35,360,406.31
  5. Step 5: Solve for x
    x = 35,360,406.31/8,364.98
  6. Step 6: Final answer
    x = 4,227.20

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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.