Home / 5,656.65-7,806.21-3,138.77

Finding the Fourth Proportional to 5,656.65, 7,806.21 and 3,138.77

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Solution

The fourth proportional to 5,656.65, 7,806.21 and 3,138.77 is: 4,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.65 : 7,806.21 = 3,138.77 : x
  2. Step 2: Convert to fraction form
    5,656.65/7,806.21 = 3,138.77/x
  3. Step 3: Cross multiply
    5,656.65x = 7,806.21 × 3,138.77
  4. Step 4: Simplify right side
    5,656.65x = 24,501,866.58
  5. Step 5: Solve for x
    x = 24,501,866.58/5,656.65
  6. Step 6: Final answer
    x = 4,331.52

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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.