Home / 8,618.49-12,927.79-4,720.77

Finding the Fourth Proportional to 8,618.49, 12,927.79 and 4,720.77

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Solution

The fourth proportional to 8,618.49, 12,927.79 and 4,720.77 is: 7,081.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.49 : 12,927.79 = 4,720.77 : x
  2. Step 2: Convert to fraction form
    8,618.49/12,927.79 = 4,720.77/x
  3. Step 3: Cross multiply
    8,618.49x = 12,927.79 × 4,720.77
  4. Step 4: Simplify right side
    8,618.49x = 61,029,123.20
  5. Step 5: Solve for x
    x = 61,029,123.20/8,618.49
  6. Step 6: Final answer
    x = 7,081.19

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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.