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Finding the Fourth Proportional to 7,607.40, 10,526.94 and 6,486.54

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Solution

The fourth proportional to 7,607.40, 10,526.94 and 6,486.54 is: 8,975.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,607.40 : 10,526.94 = 6,486.54 : x
  2. Step 2: Convert to fraction form
    7,607.40/10,526.94 = 6,486.54/x
  3. Step 3: Cross multiply
    7,607.40x = 10,526.94 × 6,486.54
  4. Step 4: Simplify right side
    7,607.40x = 68,283,417.39
  5. Step 5: Solve for x
    x = 68,283,417.39/7,607.40
  6. Step 6: Final answer
    x = 8,975.92

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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.