Home / 4,921.19-6,790.68-2,931.36

Finding the Fourth Proportional to 4,921.19, 6,790.68 and 2,931.36

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Solution

The fourth proportional to 4,921.19, 6,790.68 and 2,931.36 is: 4,044.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.19 : 6,790.68 = 2,931.36 : x
  2. Step 2: Convert to fraction form
    4,921.19/6,790.68 = 2,931.36/x
  3. Step 3: Cross multiply
    4,921.19x = 6,790.68 × 2,931.36
  4. Step 4: Simplify right side
    4,921.19x = 19,905,927.72
  5. Step 5: Solve for x
    x = 19,905,927.72/4,921.19
  6. Step 6: Final answer
    x = 4,044.95

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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.