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Finding the Fourth Proportional to 8,745.10, 13,050.44 and 7,810.90

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Solution

The fourth proportional to 8,745.10, 13,050.44 and 7,810.90 is: 11,656.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.10 : 13,050.44 = 7,810.90 : x
  2. Step 2: Convert to fraction form
    8,745.10/13,050.44 = 7,810.90/x
  3. Step 3: Cross multiply
    8,745.10x = 13,050.44 × 7,810.90
  4. Step 4: Simplify right side
    8,745.10x = 101,935,681.80
  5. Step 5: Solve for x
    x = 101,935,681.80/8,745.10
  6. Step 6: Final answer
    x = 11,656.32

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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.