Home / 2,931.87-4,023.93-2,681.58

Finding the Fourth Proportional to 2,931.87, 4,023.93 and 2,681.58

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Solution

The fourth proportional to 2,931.87, 4,023.93 and 2,681.58 is: 3,680.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.87 : 4,023.93 = 2,681.58 : x
  2. Step 2: Convert to fraction form
    2,931.87/4,023.93 = 2,681.58/x
  3. Step 3: Cross multiply
    2,931.87x = 4,023.93 × 2,681.58
  4. Step 4: Simplify right side
    2,931.87x = 10,790,490.21
  5. Step 5: Solve for x
    x = 10,790,490.21/2,931.87
  6. Step 6: Final answer
    x = 3,680.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.