Home / 2,289.10-3,159.48-1,345

Finding the Fourth Proportional to 2,289.10, 3,159.48 and 1,345

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Solution

The fourth proportional to 2,289.10, 3,159.48 and 1,345 is: 1,856.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.10 : 3,159.48 = 1,345 : x
  2. Step 2: Convert to fraction form
    2,289.10/3,159.48 = 1,345/x
  3. Step 3: Cross multiply
    2,289.10x = 3,159.48 × 1,345
  4. Step 4: Simplify right side
    2,289.10x = 4,249,500.60
  5. Step 5: Solve for x
    x = 4,249,500.60/2,289.10
  6. Step 6: Final answer
    x = 1,856.41

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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.