Home / 3,890.36-5,369.28-2,475.20

Finding the Fourth Proportional to 3,890.36, 5,369.28 and 2,475.20

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Solution

The fourth proportional to 3,890.36, 5,369.28 and 2,475.20 is: 3,416.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.36 : 5,369.28 = 2,475.20 : x
  2. Step 2: Convert to fraction form
    3,890.36/5,369.28 = 2,475.20/x
  3. Step 3: Cross multiply
    3,890.36x = 5,369.28 × 2,475.20
  4. Step 4: Simplify right side
    3,890.36x = 13,290,041.86
  5. Step 5: Solve for x
    x = 13,290,041.86/3,890.36
  6. Step 6: Final answer
    x = 3,416.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.