Home / 9,171.90-12,657.36-4,980.18

Finding the Fourth Proportional to 9,171.90, 12,657.36 and 4,980.18

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Solution

The fourth proportional to 9,171.90, 12,657.36 and 4,980.18 is: 6,872.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,171.90 : 12,657.36 = 4,980.18 : x
  2. Step 2: Convert to fraction form
    9,171.90/12,657.36 = 4,980.18/x
  3. Step 3: Cross multiply
    9,171.90x = 12,657.36 × 4,980.18
  4. Step 4: Simplify right side
    9,171.90x = 63,035,931.12
  5. Step 5: Solve for x
    x = 63,035,931.12/9,171.90
  6. Step 6: Final answer
    x = 6,872.72

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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.