Home / 7,831.38-10,805.74-4,475.30

Finding the Fourth Proportional to 7,831.38, 10,805.74 and 4,475.30

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Solution

The fourth proportional to 7,831.38, 10,805.74 and 4,475.30 is: 6,175.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.38 : 10,805.74 = 4,475.30 : x
  2. Step 2: Convert to fraction form
    7,831.38/10,805.74 = 4,475.30/x
  3. Step 3: Cross multiply
    7,831.38x = 10,805.74 × 4,475.30
  4. Step 4: Simplify right side
    7,831.38x = 48,358,851.82
  5. Step 5: Solve for x
    x = 48,358,851.82/7,831.38
  6. Step 6: Final answer
    x = 6,175.01

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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.