Home / 3,860.64-5,328.90-2,289.24

Finding the Fourth Proportional to 3,860.64, 5,328.90 and 2,289.24

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Solution

The fourth proportional to 3,860.64, 5,328.90 and 2,289.24 is: 3,159.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.64 : 5,328.90 = 2,289.24 : x
  2. Step 2: Convert to fraction form
    3,860.64/5,328.90 = 2,289.24/x
  3. Step 3: Cross multiply
    3,860.64x = 5,328.90 × 2,289.24
  4. Step 4: Simplify right side
    3,860.64x = 12,199,131.04
  5. Step 5: Solve for x
    x = 12,199,131.04/3,860.64
  6. Step 6: Final answer
    x = 3,159.87

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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.