Home / 2,900.32-4,002.88-1,721.68

Finding the Fourth Proportional to 2,900.32, 4,002.88 and 1,721.68

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Solution

The fourth proportional to 2,900.32, 4,002.88 and 1,721.68 is: 2,376.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.32 : 4,002.88 = 1,721.68 : x
  2. Step 2: Convert to fraction form
    2,900.32/4,002.88 = 1,721.68/x
  3. Step 3: Cross multiply
    2,900.32x = 4,002.88 × 1,721.68
  4. Step 4: Simplify right side
    2,900.32x = 6,891,678.44
  5. Step 5: Solve for x
    x = 6,891,678.44/2,900.32
  6. Step 6: Final answer
    x = 2,376.18

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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.