Home / 2,289.52-3,159.56-1,345.12

Finding the Fourth Proportional to 2,289.52, 3,159.56 and 1,345.12

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Solution

The fourth proportional to 2,289.52, 3,159.56 and 1,345.12 is: 1,856.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.52 : 3,159.56 = 1,345.12 : x
  2. Step 2: Convert to fraction form
    2,289.52/3,159.56 = 1,345.12/x
  3. Step 3: Cross multiply
    2,289.52x = 3,159.56 × 1,345.12
  4. Step 4: Simplify right side
    2,289.52x = 4,249,987.35
  5. Step 5: Solve for x
    x = 4,249,987.35/2,289.52
  6. Step 6: Final answer
    x = 1,856.28

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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.