Home / 7,831.81-10,798.84-5,315.55

Finding the Fourth Proportional to 7,831.81, 10,798.84 and 5,315.55

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Solution

The fourth proportional to 7,831.81, 10,798.84 and 5,315.55 is: 7,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.81 : 10,798.84 = 5,315.55 : x
  2. Step 2: Convert to fraction form
    7,831.81/10,798.84 = 5,315.55/x
  3. Step 3: Cross multiply
    7,831.81x = 10,798.84 × 5,315.55
  4. Step 4: Simplify right side
    7,831.81x = 57,401,785.43
  5. Step 5: Solve for x
    x = 57,401,785.43/7,831.81
  6. Step 6: Final answer
    x = 7,329.31

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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.