Home / 2,289.21-3,159.05-1,404.87

Finding the Fourth Proportional to 2,289.21, 3,159.05 and 1,404.87

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Solution

The fourth proportional to 2,289.21, 3,159.05 and 1,404.87 is: 1,938.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.21 : 3,159.05 = 1,404.87 : x
  2. Step 2: Convert to fraction form
    2,289.21/3,159.05 = 1,404.87/x
  3. Step 3: Cross multiply
    2,289.21x = 3,159.05 × 1,404.87
  4. Step 4: Simplify right side
    2,289.21x = 4,438,047.55
  5. Step 5: Solve for x
    x = 4,438,047.55/2,289.21
  6. Step 6: Final answer
    x = 1,938.68

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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.