Home / 2,125.32-2,931.75-1,329.18

Finding the Fourth Proportional to 2,125.32, 2,931.75 and 1,329.18

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Solution

The fourth proportional to 2,125.32, 2,931.75 and 1,329.18 is: 1,833.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.32 : 2,931.75 = 1,329.18 : x
  2. Step 2: Convert to fraction form
    2,125.32/2,931.75 = 1,329.18/x
  3. Step 3: Cross multiply
    2,125.32x = 2,931.75 × 1,329.18
  4. Step 4: Simplify right side
    2,125.32x = 3,896,823.47
  5. Step 5: Solve for x
    x = 3,896,823.47/2,125.32
  6. Step 6: Final answer
    x = 1,833.52

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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.