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Finding the Fourth Proportional to 7,681.96, 11,525.40 and 2,751.52

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Solution

The fourth proportional to 7,681.96, 11,525.40 and 2,751.52 is: 4,128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,681.96 : 11,525.40 = 2,751.52 : x
  2. Step 2: Convert to fraction form
    7,681.96/11,525.40 = 2,751.52/x
  3. Step 3: Cross multiply
    7,681.96x = 11,525.40 × 2,751.52
  4. Step 4: Simplify right side
    7,681.96x = 31,712,368.61
  5. Step 5: Solve for x
    x = 31,712,368.61/7,681.96
  6. Step 6: Final answer
    x = 4,128.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.