Home / 5,640.06-8,459.40-1,479.72

Finding the Fourth Proportional to 5,640.06, 8,459.40 and 1,479.72

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Solution

The fourth proportional to 5,640.06, 8,459.40 and 1,479.72 is: 2,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.06 : 8,459.40 = 1,479.72 : x
  2. Step 2: Convert to fraction form
    5,640.06/8,459.40 = 1,479.72/x
  3. Step 3: Cross multiply
    5,640.06x = 8,459.40 × 1,479.72
  4. Step 4: Simplify right side
    5,640.06x = 12,517,543.37
  5. Step 5: Solve for x
    x = 12,517,543.37/5,640.06
  6. Step 6: Final answer
    x = 2,219.40

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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.