Home / 2,312.11-3,192.24-1,429.21

Finding the Fourth Proportional to 2,312.11, 3,192.24 and 1,429.21

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Solution

The fourth proportional to 2,312.11, 3,192.24 and 1,429.21 is: 1,973.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.11 : 3,192.24 = 1,429.21 : x
  2. Step 2: Convert to fraction form
    2,312.11/3,192.24 = 1,429.21/x
  3. Step 3: Cross multiply
    2,312.11x = 3,192.24 × 1,429.21
  4. Step 4: Simplify right side
    2,312.11x = 4,562,381.33
  5. Step 5: Solve for x
    x = 4,562,381.33/2,312.11
  6. Step 6: Final answer
    x = 1,973.25

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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.