Home / 5,479.60-8,219.40-4,386.10

Finding the Fourth Proportional to 5,479.60, 8,219.40 and 4,386.10

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Solution

The fourth proportional to 5,479.60, 8,219.40 and 4,386.10 is: 6,579.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.60 : 8,219.40 = 4,386.10 : x
  2. Step 2: Convert to fraction form
    5,479.60/8,219.40 = 4,386.10/x
  3. Step 3: Cross multiply
    5,479.60x = 8,219.40 × 4,386.10
  4. Step 4: Simplify right side
    5,479.60x = 36,051,110.34
  5. Step 5: Solve for x
    x = 36,051,110.34/5,479.60
  6. Step 6: Final answer
    x = 6,579.15

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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.