Home / 3,412.16-4,709.34-2,153.90

Finding the Fourth Proportional to 3,412.16, 4,709.34 and 2,153.90

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Solution

The fourth proportional to 3,412.16, 4,709.34 and 2,153.90 is: 2,972.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.16 : 4,709.34 = 2,153.90 : x
  2. Step 2: Convert to fraction form
    3,412.16/4,709.34 = 2,153.90/x
  3. Step 3: Cross multiply
    3,412.16x = 4,709.34 × 2,153.90
  4. Step 4: Simplify right side
    3,412.16x = 10,143,459.20
  5. Step 5: Solve for x
    x = 10,143,459.20/3,412.16
  6. Step 6: Final answer
    x = 2,972.74

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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.