Home / 1,771.28-2,667.26-1,312.32

Finding the Fourth Proportional to 1,771.28, 2,667.26 and 1,312.32

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Solution

The fourth proportional to 1,771.28, 2,667.26 and 1,312.32 is: 1,976.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,771.28 : 2,667.26 = 1,312.32 : x
  2. Step 2: Convert to fraction form
    1,771.28/2,667.26 = 1,312.32/x
  3. Step 3: Cross multiply
    1,771.28x = 2,667.26 × 1,312.32
  4. Step 4: Simplify right side
    1,771.28x = 3,500,285.31
  5. Step 5: Solve for x
    x = 3,500,285.31/1,771.28
  6. Step 6: Final answer
    x = 1,976.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.