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Finding the Fourth Proportional to 7,762.50, 10,712.25 and 4,225.75

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Solution

The fourth proportional to 7,762.50, 10,712.25 and 4,225.75 is: 5,831.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762.50 : 10,712.25 = 4,225.75 : x
  2. Step 2: Convert to fraction form
    7,762.50/10,712.25 = 4,225.75/x
  3. Step 3: Cross multiply
    7,762.50x = 10,712.25 × 4,225.75
  4. Step 4: Simplify right side
    7,762.50x = 45,267,263.66
  5. Step 5: Solve for x
    x = 45,267,263.66/7,762.50
  6. Step 6: Final answer
    x = 5,831.53

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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.