Home / 5,138.08-7,707.64-1,440.32

Finding the Fourth Proportional to 5,138.08, 7,707.64 and 1,440.32

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Solution

The fourth proportional to 5,138.08, 7,707.64 and 1,440.32 is: 2,160.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.08 : 7,707.64 = 1,440.32 : x
  2. Step 2: Convert to fraction form
    5,138.08/7,707.64 = 1,440.32/x
  3. Step 3: Cross multiply
    5,138.08x = 7,707.64 × 1,440.32
  4. Step 4: Simplify right side
    5,138.08x = 11,101,468.04
  5. Step 5: Solve for x
    x = 11,101,468.04/5,138.08
  6. Step 6: Final answer
    x = 2,160.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.