Home / 2,312.40-3,190.52-2,197.40

Finding the Fourth Proportional to 2,312.40, 3,190.52 and 2,197.40

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Solution

The fourth proportional to 2,312.40, 3,190.52 and 2,197.40 is: 3,031.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.40 : 3,190.52 = 2,197.40 : x
  2. Step 2: Convert to fraction form
    2,312.40/3,190.52 = 2,197.40/x
  3. Step 3: Cross multiply
    2,312.40x = 3,190.52 × 2,197.40
  4. Step 4: Simplify right side
    2,312.40x = 7,010,848.65
  5. Step 5: Solve for x
    x = 7,010,848.65/2,312.40
  6. Step 6: Final answer
    x = 3,031.85

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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.