Home / 2,389.39-3,297.62-2,312.84

Finding the Fourth Proportional to 2,389.39, 3,297.62 and 2,312.84

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Solution

The fourth proportional to 2,389.39, 3,297.62 and 2,312.84 is: 3,191.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.39 : 3,297.62 = 2,312.84 : x
  2. Step 2: Convert to fraction form
    2,389.39/3,297.62 = 2,312.84/x
  3. Step 3: Cross multiply
    2,389.39x = 3,297.62 × 2,312.84
  4. Step 4: Simplify right side
    2,389.39x = 7,626,881.47
  5. Step 5: Solve for x
    x = 7,626,881.47/2,389.39
  6. Step 6: Final answer
    x = 3,191.98

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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.