Home / 3,210.40-4,431-2,091.52

Finding the Fourth Proportional to 3,210.40, 4,431 and 2,091.52

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Solution

The fourth proportional to 3,210.40, 4,431 and 2,091.52 is: 2,886.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,210.40 : 4,431 = 2,091.52 : x
  2. Step 2: Convert to fraction form
    3,210.40/4,431 = 2,091.52/x
  3. Step 3: Cross multiply
    3,210.40x = 4,431 × 2,091.52
  4. Step 4: Simplify right side
    3,210.40x = 9,267,525.12
  5. Step 5: Solve for x
    x = 9,267,525.12/3,210.40
  6. Step 6: Final answer
    x = 2,886.72

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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.