Home / 7,730.40-10,660.14-6,876.98

Finding the Fourth Proportional to 7,730.40, 10,660.14 and 6,876.98

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Solution

The fourth proportional to 7,730.40, 10,660.14 and 6,876.98 is: 9,483.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,730.40 : 10,660.14 = 6,876.98 : x
  2. Step 2: Convert to fraction form
    7,730.40/10,660.14 = 6,876.98/x
  3. Step 3: Cross multiply
    7,730.40x = 10,660.14 × 6,876.98
  4. Step 4: Simplify right side
    7,730.40x = 73,309,569.58
  5. Step 5: Solve for x
    x = 73,309,569.58/7,730.40
  6. Step 6: Final answer
    x = 9,483.28

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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.