Home / 4,977.79-6,869.42-2,881.51

Finding the Fourth Proportional to 4,977.79, 6,869.42 and 2,881.51

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Solution

The fourth proportional to 4,977.79, 6,869.42 and 2,881.51 is: 3,976.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,977.79 : 6,869.42 = 2,881.51 : x
  2. Step 2: Convert to fraction form
    4,977.79/6,869.42 = 2,881.51/x
  3. Step 3: Cross multiply
    4,977.79x = 6,869.42 × 2,881.51
  4. Step 4: Simplify right side
    4,977.79x = 19,794,302.42
  5. Step 5: Solve for x
    x = 19,794,302.42/4,977.79
  6. Step 6: Final answer
    x = 3,976.52

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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.