Home / 7,138.23-9,848.55-4,153.51

Finding the Fourth Proportional to 7,138.23, 9,848.55 and 4,153.51

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Solution

The fourth proportional to 7,138.23, 9,848.55 and 4,153.51 is: 5,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.23 : 9,848.55 = 4,153.51 : x
  2. Step 2: Convert to fraction form
    7,138.23/9,848.55 = 4,153.51/x
  3. Step 3: Cross multiply
    7,138.23x = 9,848.55 × 4,153.51
  4. Step 4: Simplify right side
    7,138.23x = 40,906,050.91
  5. Step 5: Solve for x
    x = 40,906,050.91/7,138.23
  6. Step 6: Final answer
    x = 5,730.56

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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.