Home / 3,071.80-4,238.58-2,916.16

Finding the Fourth Proportional to 3,071.80, 4,238.58 and 2,916.16

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Solution

The fourth proportional to 3,071.80, 4,238.58 and 2,916.16 is: 4,023.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.80 : 4,238.58 = 2,916.16 : x
  2. Step 2: Convert to fraction form
    3,071.80/4,238.58 = 2,916.16/x
  3. Step 3: Cross multiply
    3,071.80x = 4,238.58 × 2,916.16
  4. Step 4: Simplify right side
    3,071.80x = 12,360,377.45
  5. Step 5: Solve for x
    x = 12,360,377.45/3,071.80
  6. Step 6: Final answer
    x = 4,023.82

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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.