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Finding the Fourth Proportional to 7,124.70, 9,831.60 and 4,291.53

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Solution

The fourth proportional to 7,124.70, 9,831.60 and 4,291.53 is: 5,922.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.70 : 9,831.60 = 4,291.53 : x
  2. Step 2: Convert to fraction form
    7,124.70/9,831.60 = 4,291.53/x
  3. Step 3: Cross multiply
    7,124.70x = 9,831.60 × 4,291.53
  4. Step 4: Simplify right side
    7,124.70x = 42,192,606.35
  5. Step 5: Solve for x
    x = 42,192,606.35/7,124.70
  6. Step 6: Final answer
    x = 5,922.02

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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.