Home / 3,686.90-5,526.18-1,603.78

Finding the Fourth Proportional to 3,686.90, 5,526.18 and 1,603.78

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Solution

The fourth proportional to 3,686.90, 5,526.18 and 1,603.78 is: 2,403.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686.90 : 5,526.18 = 1,603.78 : x
  2. Step 2: Convert to fraction form
    3,686.90/5,526.18 = 1,603.78/x
  3. Step 3: Cross multiply
    3,686.90x = 5,526.18 × 1,603.78
  4. Step 4: Simplify right side
    3,686.90x = 8,862,776.96
  5. Step 5: Solve for x
    x = 8,862,776.96/3,686.90
  6. Step 6: Final answer
    x = 2,403.86

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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.