Home / 8,364.16-12,547.20-2,815.60

Finding the Fourth Proportional to 8,364.16, 12,547.20 and 2,815.60

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Solution

The fourth proportional to 8,364.16, 12,547.20 and 2,815.60 is: 4,223.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,364.16 : 12,547.20 = 2,815.60 : x
  2. Step 2: Convert to fraction form
    8,364.16/12,547.20 = 2,815.60/x
  3. Step 3: Cross multiply
    8,364.16x = 12,547.20 × 2,815.60
  4. Step 4: Simplify right side
    8,364.16x = 35,327,896.32
  5. Step 5: Solve for x
    x = 35,327,896.32/8,364.16
  6. Step 6: Final answer
    x = 4,223.72

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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.