Home / 8,865.45-12,235.05-4,887

Finding the Fourth Proportional to 8,865.45, 12,235.05 and 4,887

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Solution

The fourth proportional to 8,865.45, 12,235.05 and 4,887 is: 6,744.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.45 : 12,235.05 = 4,887 : x
  2. Step 2: Convert to fraction form
    8,865.45/12,235.05 = 4,887/x
  3. Step 3: Cross multiply
    8,865.45x = 12,235.05 × 4,887
  4. Step 4: Simplify right side
    8,865.45x = 59,792,689.35
  5. Step 5: Solve for x
    x = 59,792,689.35/8,865.45
  6. Step 6: Final answer
    x = 6,744.46

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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.