Home / 5,107.64-7,048.35-3,121.52

Finding the Fourth Proportional to 5,107.64, 7,048.35 and 3,121.52

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Solution

The fourth proportional to 5,107.64, 7,048.35 and 3,121.52 is: 4,307.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.64 : 7,048.35 = 3,121.52 : x
  2. Step 2: Convert to fraction form
    5,107.64/7,048.35 = 3,121.52/x
  3. Step 3: Cross multiply
    5,107.64x = 7,048.35 × 3,121.52
  4. Step 4: Simplify right side
    5,107.64x = 22,001,565.49
  5. Step 5: Solve for x
    x = 22,001,565.49/5,107.64
  6. Step 6: Final answer
    x = 4,307.58

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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.