Home / 5,618.87-8,430.72-3,018.77

Finding the Fourth Proportional to 5,618.87, 8,430.72 and 3,018.77

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Solution

The fourth proportional to 5,618.87, 8,430.72 and 3,018.77 is: 4,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.87 : 8,430.72 = 3,018.77 : x
  2. Step 2: Convert to fraction form
    5,618.87/8,430.72 = 3,018.77/x
  3. Step 3: Cross multiply
    5,618.87x = 8,430.72 × 3,018.77
  4. Step 4: Simplify right side
    5,618.87x = 25,450,362.46
  5. Step 5: Solve for x
    x = 25,450,362.46/5,618.87
  6. Step 6: Final answer
    x = 4,529.45

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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.