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Finding the Fourth Proportional to 7,655.58, 11,386.04 and 7,629.66

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Solution

The fourth proportional to 7,655.58, 11,386.04 and 7,629.66 is: 11,347.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,655.58 : 11,386.04 = 7,629.66 : x
  2. Step 2: Convert to fraction form
    7,655.58/11,386.04 = 7,629.66/x
  3. Step 3: Cross multiply
    7,655.58x = 11,386.04 × 7,629.66
  4. Step 4: Simplify right side
    7,655.58x = 86,871,575.80
  5. Step 5: Solve for x
    x = 86,871,575.80/7,655.58
  6. Step 6: Final answer
    x = 11,347.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.