Home / 2,835.12-3,914.40-2,312.40

Finding the Fourth Proportional to 2,835.12, 3,914.40 and 2,312.40

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Solution

The fourth proportional to 2,835.12, 3,914.40 and 2,312.40 is: 3,192.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,835.12 : 3,914.40 = 2,312.40 : x
  2. Step 2: Convert to fraction form
    2,835.12/3,914.40 = 2,312.40/x
  3. Step 3: Cross multiply
    2,835.12x = 3,914.40 × 2,312.40
  4. Step 4: Simplify right side
    2,835.12x = 9,051,658.56
  5. Step 5: Solve for x
    x = 9,051,658.56/2,835.12
  6. Step 6: Final answer
    x = 3,192.69

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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.