Home / 9,767.76-13,478.40-5,518.32

Finding the Fourth Proportional to 9,767.76, 13,478.40 and 5,518.32

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Solution

The fourth proportional to 9,767.76, 13,478.40 and 5,518.32 is: 7,614.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,767.76 : 13,478.40 = 5,518.32 : x
  2. Step 2: Convert to fraction form
    9,767.76/13,478.40 = 5,518.32/x
  3. Step 3: Cross multiply
    9,767.76x = 13,478.40 × 5,518.32
  4. Step 4: Simplify right side
    9,767.76x = 74,378,124.29
  5. Step 5: Solve for x
    x = 74,378,124.29/9,767.76
  6. Step 6: Final answer
    x = 7,614.66

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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.