Home / 3,215.16-4,437.18-2,690.28

Finding the Fourth Proportional to 3,215.16, 4,437.18 and 2,690.28

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Solution

The fourth proportional to 3,215.16, 4,437.18 and 2,690.28 is: 3,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.16 : 4,437.18 = 2,690.28 : x
  2. Step 2: Convert to fraction form
    3,215.16/4,437.18 = 2,690.28/x
  3. Step 3: Cross multiply
    3,215.16x = 4,437.18 × 2,690.28
  4. Step 4: Simplify right side
    3,215.16x = 11,937,256.61
  5. Step 5: Solve for x
    x = 11,937,256.61/3,215.16
  6. Step 6: Final answer
    x = 3,712.80

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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.