Home / 8,619.50-11,895.18-5,085.74

Finding the Fourth Proportional to 8,619.50, 11,895.18 and 5,085.74

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Solution

The fourth proportional to 8,619.50, 11,895.18 and 5,085.74 is: 7,018.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.50 : 11,895.18 = 5,085.74 : x
  2. Step 2: Convert to fraction form
    8,619.50/11,895.18 = 5,085.74/x
  3. Step 3: Cross multiply
    8,619.50x = 11,895.18 × 5,085.74
  4. Step 4: Simplify right side
    8,619.50x = 60,495,792.73
  5. Step 5: Solve for x
    x = 60,495,792.73/8,619.50
  6. Step 6: Final answer
    x = 7,018.48

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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.