Home / 2,830.16-4,221.20-2,653.76

Finding the Fourth Proportional to 2,830.16, 4,221.20 and 2,653.76

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Solution

The fourth proportional to 2,830.16, 4,221.20 and 2,653.76 is: 3,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,830.16 : 4,221.20 = 2,653.76 : x
  2. Step 2: Convert to fraction form
    2,830.16/4,221.20 = 2,653.76/x
  3. Step 3: Cross multiply
    2,830.16x = 4,221.20 × 2,653.76
  4. Step 4: Simplify right side
    2,830.16x = 11,202,051.71
  5. Step 5: Solve for x
    x = 11,202,051.71/2,830.16
  6. Step 6: Final answer
    x = 3,958.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.