Home / 3,140.16-4,688.88-2,808.96

Finding the Fourth Proportional to 3,140.16, 4,688.88 and 2,808.96

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Solution

The fourth proportional to 3,140.16, 4,688.88 and 2,808.96 is: 4,194.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.16 : 4,688.88 = 2,808.96 : x
  2. Step 2: Convert to fraction form
    3,140.16/4,688.88 = 2,808.96/x
  3. Step 3: Cross multiply
    3,140.16x = 4,688.88 × 2,808.96
  4. Step 4: Simplify right side
    3,140.16x = 13,170,876.36
  5. Step 5: Solve for x
    x = 13,170,876.36/3,140.16
  6. Step 6: Final answer
    x = 4,194.33

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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.