Home / 2,947.17-4,067.36-1,688.63

Finding the Fourth Proportional to 2,947.17, 4,067.36 and 1,688.63

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Solution

The fourth proportional to 2,947.17, 4,067.36 and 1,688.63 is: 2,330.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.17 : 4,067.36 = 1,688.63 : x
  2. Step 2: Convert to fraction form
    2,947.17/4,067.36 = 1,688.63/x
  3. Step 3: Cross multiply
    2,947.17x = 4,067.36 × 1,688.63
  4. Step 4: Simplify right side
    2,947.17x = 6,868,237.34
  5. Step 5: Solve for x
    x = 6,868,237.34/2,947.17
  6. Step 6: Final answer
    x = 2,330.45

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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.