Home / 2,130.85-3,192.31-1,157.77

Finding the Fourth Proportional to 2,130.85, 3,192.31 and 1,157.77

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Solution

The fourth proportional to 2,130.85, 3,192.31 and 1,157.77 is: 1,734.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.85 : 3,192.31 = 1,157.77 : x
  2. Step 2: Convert to fraction form
    2,130.85/3,192.31 = 1,157.77/x
  3. Step 3: Cross multiply
    2,130.85x = 3,192.31 × 1,157.77
  4. Step 4: Simplify right side
    2,130.85x = 3,695,960.75
  5. Step 5: Solve for x
    x = 3,695,960.75/2,130.85
  6. Step 6: Final answer
    x = 1,734.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.