Home / 7,831.74-10,813.14-5,815.65

Finding the Fourth Proportional to 7,831.74, 10,813.14 and 5,815.65

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Solution

The fourth proportional to 7,831.74, 10,813.14 and 5,815.65 is: 8,029.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.74 : 10,813.14 = 5,815.65 : x
  2. Step 2: Convert to fraction form
    7,831.74/10,813.14 = 5,815.65/x
  3. Step 3: Cross multiply
    7,831.74x = 10,813.14 × 5,815.65
  4. Step 4: Simplify right side
    7,831.74x = 62,885,437.64
  5. Step 5: Solve for x
    x = 62,885,437.64/7,831.74
  6. Step 6: Final answer
    x = 8,029.56

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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.