Home / 8,718.35-12,030.40-5,181.08

Finding the Fourth Proportional to 8,718.35, 12,030.40 and 5,181.08

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Solution

The fourth proportional to 8,718.35, 12,030.40 and 5,181.08 is: 7,149.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.35 : 12,030.40 = 5,181.08 : x
  2. Step 2: Convert to fraction form
    8,718.35/12,030.40 = 5,181.08/x
  3. Step 3: Cross multiply
    8,718.35x = 12,030.40 × 5,181.08
  4. Step 4: Simplify right side
    8,718.35x = 62,330,464.83
  5. Step 5: Solve for x
    x = 62,330,464.83/8,718.35
  6. Step 6: Final answer
    x = 7,149.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.