Home / 6,929.76-9,555.12-5,155.68

Finding the Fourth Proportional to 6,929.76, 9,555.12 and 5,155.68

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Solution

The fourth proportional to 6,929.76, 9,555.12 and 5,155.68 is: 7,108.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,929.76 : 9,555.12 = 5,155.68 : x
  2. Step 2: Convert to fraction form
    6,929.76/9,555.12 = 5,155.68/x
  3. Step 3: Cross multiply
    6,929.76x = 9,555.12 × 5,155.68
  4. Step 4: Simplify right side
    6,929.76x = 49,263,141.08
  5. Step 5: Solve for x
    x = 49,263,141.08/6,929.76
  6. Step 6: Final answer
    x = 7,108.92

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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.