Home / 2,197.32-3,031.94-1,312.84

Finding the Fourth Proportional to 2,197.32, 3,031.94 and 1,312.84

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Solution

The fourth proportional to 2,197.32, 3,031.94 and 1,312.84 is: 1,811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,197.32 : 3,031.94 = 1,312.84 : x
  2. Step 2: Convert to fraction form
    2,197.32/3,031.94 = 1,312.84/x
  3. Step 3: Cross multiply
    2,197.32x = 3,031.94 × 1,312.84
  4. Step 4: Simplify right side
    2,197.32x = 3,980,452.11
  5. Step 5: Solve for x
    x = 3,980,452.11/2,197.32
  6. Step 6: Final answer
    x = 1,811.50

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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.