Home / 3,459.40-5,212.21-3,130.78

Finding the Fourth Proportional to 3,459.40, 5,212.21 and 3,130.78

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Solution

The fourth proportional to 3,459.40, 5,212.21 and 3,130.78 is: 4,717.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,459.40 : 5,212.21 = 3,130.78 : x
  2. Step 2: Convert to fraction form
    3,459.40/5,212.21 = 3,130.78/x
  3. Step 3: Cross multiply
    3,459.40x = 5,212.21 × 3,130.78
  4. Step 4: Simplify right side
    3,459.40x = 16,318,282.82
  5. Step 5: Solve for x
    x = 16,318,282.82/3,459.40
  6. Step 6: Final answer
    x = 4,717.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.