Home / 5,618.45-8,427.60-4,386.87

Finding the Fourth Proportional to 5,618.45, 8,427.60 and 4,386.87

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Solution

The fourth proportional to 5,618.45, 8,427.60 and 4,386.87 is: 6,580.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.45 : 8,427.60 = 4,386.87 : x
  2. Step 2: Convert to fraction form
    5,618.45/8,427.60 = 4,386.87/x
  3. Step 3: Cross multiply
    5,618.45x = 8,427.60 × 4,386.87
  4. Step 4: Simplify right side
    5,618.45x = 36,970,785.61
  5. Step 5: Solve for x
    x = 36,970,785.61/5,618.45
  6. Step 6: Final answer
    x = 6,580.25

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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.