Home / 2,813.12-4,215.12-1,714.15

Finding the Fourth Proportional to 2,813.12, 4,215.12 and 1,714.15

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Solution

The fourth proportional to 2,813.12, 4,215.12 and 1,714.15 is: 2,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.12 : 4,215.12 = 1,714.15 : x
  2. Step 2: Convert to fraction form
    2,813.12/4,215.12 = 1,714.15/x
  3. Step 3: Cross multiply
    2,813.12x = 4,215.12 × 1,714.15
  4. Step 4: Simplify right side
    2,813.12x = 7,225,347.95
  5. Step 5: Solve for x
    x = 7,225,347.95/2,813.12
  6. Step 6: Final answer
    x = 2,568.45

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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.