Home / 3,790.95-5,686.96-1,325.21

Finding the Fourth Proportional to 3,790.95, 5,686.96 and 1,325.21

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Solution

The fourth proportional to 3,790.95, 5,686.96 and 1,325.21 is: 1,988.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,790.95 : 5,686.96 = 1,325.21 : x
  2. Step 2: Convert to fraction form
    3,790.95/5,686.96 = 1,325.21/x
  3. Step 3: Cross multiply
    3,790.95x = 5,686.96 × 1,325.21
  4. Step 4: Simplify right side
    3,790.95x = 7,536,409.39
  5. Step 5: Solve for x
    x = 7,536,409.39/3,790.95
  6. Step 6: Final answer
    x = 1,988.00

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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.