Home / 2,833.09-3,909.86-1,574.20

Finding the Fourth Proportional to 2,833.09, 3,909.86 and 1,574.20

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Solution

The fourth proportional to 2,833.09, 3,909.86 and 1,574.20 is: 2,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,833.09 : 3,909.86 = 1,574.20 : x
  2. Step 2: Convert to fraction form
    2,833.09/3,909.86 = 1,574.20/x
  3. Step 3: Cross multiply
    2,833.09x = 3,909.86 × 1,574.20
  4. Step 4: Simplify right side
    2,833.09x = 6,154,883.97
  5. Step 5: Solve for x
    x = 6,154,883.97/2,833.09
  6. Step 6: Final answer
    x = 2,172.50

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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.