Home / 2,121.30-2,929.26-1,325.99

Finding the Fourth Proportional to 2,121.30, 2,929.26 and 1,325.99

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Solution

The fourth proportional to 2,121.30, 2,929.26 and 1,325.99 is: 1,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.30 : 2,929.26 = 1,325.99 : x
  2. Step 2: Convert to fraction form
    2,121.30/2,929.26 = 1,325.99/x
  3. Step 3: Cross multiply
    2,121.30x = 2,929.26 × 1,325.99
  4. Step 4: Simplify right side
    2,121.30x = 3,884,154.46
  5. Step 5: Solve for x
    x = 3,884,154.46/2,121.30
  6. Step 6: Final answer
    x = 1,831.02

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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.