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Finding the Fourth Proportional to 8,535.51, 12,803.31 and 2,988.90

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Solution

The fourth proportional to 8,535.51, 12,803.31 and 2,988.90 is: 4,483.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,535.51 : 12,803.31 = 2,988.90 : x
  2. Step 2: Convert to fraction form
    8,535.51/12,803.31 = 2,988.90/x
  3. Step 3: Cross multiply
    8,535.51x = 12,803.31 × 2,988.90
  4. Step 4: Simplify right side
    8,535.51x = 38,267,813.26
  5. Step 5: Solve for x
    x = 38,267,813.26/8,535.51
  6. Step 6: Final answer
    x = 4,483.37

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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.