Home / 1,331.67-2,007.32-1,215.03

Finding the Fourth Proportional to 1,331.67, 2,007.32 and 1,215.03

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Solution

The fourth proportional to 1,331.67, 2,007.32 and 1,215.03 is: 1,831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.67 : 2,007.32 = 1,215.03 : x
  2. Step 2: Convert to fraction form
    1,331.67/2,007.32 = 1,215.03/x
  3. Step 3: Cross multiply
    1,331.67x = 2,007.32 × 1,215.03
  4. Step 4: Simplify right side
    1,331.67x = 2,438,954.02
  5. Step 5: Solve for x
    x = 2,438,954.02/1,331.67
  6. Step 6: Final answer
    x = 1,831.50

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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.