Home / 2,128.70-2,937.60-1,244.67

Finding the Fourth Proportional to 2,128.70, 2,937.60 and 1,244.67

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Solution

The fourth proportional to 2,128.70, 2,937.60 and 1,244.67 is: 1,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.70 : 2,937.60 = 1,244.67 : x
  2. Step 2: Convert to fraction form
    2,128.70/2,937.60 = 1,244.67/x
  3. Step 3: Cross multiply
    2,128.70x = 2,937.60 × 1,244.67
  4. Step 4: Simplify right side
    2,128.70x = 3,656,342.59
  5. Step 5: Solve for x
    x = 3,656,342.59/2,128.70
  6. Step 6: Final answer
    x = 1,717.65

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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.