Home / 3,121.77-4,303.08-2,457.57

Finding the Fourth Proportional to 3,121.77, 4,303.08 and 2,457.57

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Solution

The fourth proportional to 3,121.77, 4,303.08 and 2,457.57 is: 3,387.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.77 : 4,303.08 = 2,457.57 : x
  2. Step 2: Convert to fraction form
    3,121.77/4,303.08 = 2,457.57/x
  3. Step 3: Cross multiply
    3,121.77x = 4,303.08 × 2,457.57
  4. Step 4: Simplify right side
    3,121.77x = 10,575,120.32
  5. Step 5: Solve for x
    x = 10,575,120.32/3,121.77
  6. Step 6: Final answer
    x = 3,387.54

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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.