Home / 7,721.48-10,647.63-6,606.11

Finding the Fourth Proportional to 7,721.48, 10,647.63 and 6,606.11

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Solution

The fourth proportional to 7,721.48, 10,647.63 and 6,606.11 is: 9,109.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.48 : 10,647.63 = 6,606.11 : x
  2. Step 2: Convert to fraction form
    7,721.48/10,647.63 = 6,606.11/x
  3. Step 3: Cross multiply
    7,721.48x = 10,647.63 × 6,606.11
  4. Step 4: Simplify right side
    7,721.48x = 70,339,415.02
  5. Step 5: Solve for x
    x = 70,339,415.02/7,721.48
  6. Step 6: Final answer
    x = 9,109.58

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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.