Home / 2,931.31-4,417.56-2,639.14

Finding the Fourth Proportional to 2,931.31, 4,417.56 and 2,639.14

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Solution

The fourth proportional to 2,931.31, 4,417.56 and 2,639.14 is: 3,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.31 : 4,417.56 = 2,639.14 : x
  2. Step 2: Convert to fraction form
    2,931.31/4,417.56 = 2,639.14/x
  3. Step 3: Cross multiply
    2,931.31x = 4,417.56 × 2,639.14
  4. Step 4: Simplify right side
    2,931.31x = 11,658,573.10
  5. Step 5: Solve for x
    x = 11,658,573.10/2,931.31
  6. Step 6: Final answer
    x = 3,977.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.