Home / 1,345.20-1,853.75-951.54

Finding the Fourth Proportional to 1,345.20, 1,853.75 and 951.54

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Solution

The fourth proportional to 1,345.20, 1,853.75 and 951.54 is: 1,311.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.20 : 1,853.75 = 951.54 : x
  2. Step 2: Convert to fraction form
    1,345.20/1,853.75 = 951.54/x
  3. Step 3: Cross multiply
    1,345.20x = 1,853.75 × 951.54
  4. Step 4: Simplify right side
    1,345.20x = 1,763,917.28
  5. Step 5: Solve for x
    x = 1,763,917.28/1,345.20
  6. Step 6: Final answer
    x = 1,311.27

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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.