Home / 8,370.32-12,547.49-2,820.80

Finding the Fourth Proportional to 8,370.32, 12,547.49 and 2,820.80

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Solution

The fourth proportional to 8,370.32, 12,547.49 and 2,820.80 is: 4,228.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.32 : 12,547.49 = 2,820.80 : x
  2. Step 2: Convert to fraction form
    8,370.32/12,547.49 = 2,820.80/x
  3. Step 3: Cross multiply
    8,370.32x = 12,547.49 × 2,820.80
  4. Step 4: Simplify right side
    8,370.32x = 35,393,882.95
  5. Step 5: Solve for x
    x = 35,393,882.95/8,370.32
  6. Step 6: Final answer
    x = 4,228.50

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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.