Home / 9,160.40-12,641.58-5,181.32

Finding the Fourth Proportional to 9,160.40, 12,641.58 and 5,181.32

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Solution

The fourth proportional to 9,160.40, 12,641.58 and 5,181.32 is: 7,150.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,160.40 : 12,641.58 = 5,181.32 : x
  2. Step 2: Convert to fraction form
    9,160.40/12,641.58 = 5,181.32/x
  3. Step 3: Cross multiply
    9,160.40x = 12,641.58 × 5,181.32
  4. Step 4: Simplify right side
    9,160.40x = 65,500,071.29
  5. Step 5: Solve for x
    x = 65,500,071.29/9,160.40
  6. Step 6: Final answer
    x = 7,150.35

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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.