Home / 3,609.12-5,415.69-1,417.98

Finding the Fourth Proportional to 3,609.12, 5,415.69 and 1,417.98

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Solution

The fourth proportional to 3,609.12, 5,415.69 and 1,417.98 is: 2,127.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.12 : 5,415.69 = 1,417.98 : x
  2. Step 2: Convert to fraction form
    3,609.12/5,415.69 = 1,417.98/x
  3. Step 3: Cross multiply
    3,609.12x = 5,415.69 × 1,417.98
  4. Step 4: Simplify right side
    3,609.12x = 7,679,340.11
  5. Step 5: Solve for x
    x = 7,679,340.11/3,609.12
  6. Step 6: Final answer
    x = 2,127.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.