Home / 1,955.61-2,698.92-1,247.67

Finding the Fourth Proportional to 1,955.61, 2,698.92 and 1,247.67

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Solution

The fourth proportional to 1,955.61, 2,698.92 and 1,247.67 is: 1,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.61 : 2,698.92 = 1,247.67 : x
  2. Step 2: Convert to fraction form
    1,955.61/2,698.92 = 1,247.67/x
  3. Step 3: Cross multiply
    1,955.61x = 2,698.92 × 1,247.67
  4. Step 4: Simplify right side
    1,955.61x = 3,367,361.52
  5. Step 5: Solve for x
    x = 3,367,361.52/1,955.61
  6. Step 6: Final answer
    x = 1,721.90

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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.