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Finding the Fourth Proportional to 7,681.77, 11,522.70 and 5,328.81

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Solution

The fourth proportional to 7,681.77, 11,522.70 and 5,328.81 is: 7,993.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.77 : 11,522.70 = 5,328.81 : x
  2. Step 2: Convert to fraction form
    7,681.77/11,522.70 = 5,328.81/x
  3. Step 3: Cross multiply
    7,681.77x = 11,522.70 × 5,328.81
  4. Step 4: Simplify right side
    7,681.77x = 61,402,278.99
  5. Step 5: Solve for x
    x = 61,402,278.99/7,681.77
  6. Step 6: Final answer
    x = 7,993.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.