Home / 9,172.08-12,657.36-4,980.36

Finding the Fourth Proportional to 9,172.08, 12,657.36 and 4,980.36

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Solution

The fourth proportional to 9,172.08, 12,657.36 and 4,980.36 is: 6,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172.08 : 12,657.36 = 4,980.36 : x
  2. Step 2: Convert to fraction form
    9,172.08/12,657.36 = 4,980.36/x
  3. Step 3: Cross multiply
    9,172.08x = 12,657.36 × 4,980.36
  4. Step 4: Simplify right side
    9,172.08x = 63,038,209.45
  5. Step 5: Solve for x
    x = 63,038,209.45/9,172.08
  6. Step 6: Final answer
    x = 6,872.84

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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.