Home / 3,643.80-5,465.70-3,125.40

Finding the Fourth Proportional to 3,643.80, 5,465.70 and 3,125.40

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Solution

The fourth proportional to 3,643.80, 5,465.70 and 3,125.40 is: 4,688.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,643.80 : 5,465.70 = 3,125.40 : x
  2. Step 2: Convert to fraction form
    3,643.80/5,465.70 = 3,125.40/x
  3. Step 3: Cross multiply
    3,643.80x = 5,465.70 × 3,125.40
  4. Step 4: Simplify right side
    3,643.80x = 17,082,498.78
  5. Step 5: Solve for x
    x = 17,082,498.78/3,643.80
  6. Step 6: Final answer
    x = 4,688.10

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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.