Home / 5,718.40-8,580.16-3,118.08

Finding the Fourth Proportional to 5,718.40, 8,580.16 and 3,118.08

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Solution

The fourth proportional to 5,718.40, 8,580.16 and 3,118.08 is: 4,678.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.40 : 8,580.16 = 3,118.08 : x
  2. Step 2: Convert to fraction form
    5,718.40/8,580.16 = 3,118.08/x
  3. Step 3: Cross multiply
    5,718.40x = 8,580.16 × 3,118.08
  4. Step 4: Simplify right side
    5,718.40x = 26,753,625.29
  5. Step 5: Solve for x
    x = 26,753,625.29/5,718.40
  6. Step 6: Final answer
    x = 4,678.52

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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.