Home / 3,074.68-4,242.40-1,955.21

Finding the Fourth Proportional to 3,074.68, 4,242.40 and 1,955.21

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Solution

The fourth proportional to 3,074.68, 4,242.40 and 1,955.21 is: 2,697.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.68 : 4,242.40 = 1,955.21 : x
  2. Step 2: Convert to fraction form
    3,074.68/4,242.40 = 1,955.21/x
  3. Step 3: Cross multiply
    3,074.68x = 4,242.40 × 1,955.21
  4. Step 4: Simplify right side
    3,074.68x = 8,294,798.10
  5. Step 5: Solve for x
    x = 8,294,798.10/3,074.68
  6. Step 6: Final answer
    x = 2,697.77

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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.