Home / 1,917.47-2,648.70-1,693.76

Finding the Fourth Proportional to 1,917.47, 2,648.70 and 1,693.76

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Solution

The fourth proportional to 1,917.47, 2,648.70 and 1,693.76 is: 2,339.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.47 : 2,648.70 = 1,693.76 : x
  2. Step 2: Convert to fraction form
    1,917.47/2,648.70 = 1,693.76/x
  3. Step 3: Cross multiply
    1,917.47x = 2,648.70 × 1,693.76
  4. Step 4: Simplify right side
    1,917.47x = 4,486,248.87
  5. Step 5: Solve for x
    x = 4,486,248.87/1,917.47
  6. Step 6: Final answer
    x = 2,339.67

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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.