Home / 7,688.08-10,605.36-6,691.60

Finding the Fourth Proportional to 7,688.08, 10,605.36 and 6,691.60

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Solution

The fourth proportional to 7,688.08, 10,605.36 and 6,691.60 is: 9,230.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.08 : 10,605.36 = 6,691.60 : x
  2. Step 2: Convert to fraction form
    7,688.08/10,605.36 = 6,691.60/x
  3. Step 3: Cross multiply
    7,688.08x = 10,605.36 × 6,691.60
  4. Step 4: Simplify right side
    7,688.08x = 70,966,826.98
  5. Step 5: Solve for x
    x = 70,966,826.98/7,688.08
  6. Step 6: Final answer
    x = 9,230.76

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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.