Home / 9,872.40-14,803.80-5,485.20

Finding the Fourth Proportional to 9,872.40, 14,803.80 and 5,485.20

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Solution

The fourth proportional to 9,872.40, 14,803.80 and 5,485.20 is: 8,225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,872.40 : 14,803.80 = 5,485.20 : x
  2. Step 2: Convert to fraction form
    9,872.40/14,803.80 = 5,485.20/x
  3. Step 3: Cross multiply
    9,872.40x = 14,803.80 × 5,485.20
  4. Step 4: Simplify right side
    9,872.40x = 81,201,803.76
  5. Step 5: Solve for x
    x = 81,201,803.76/9,872.40
  6. Step 6: Final answer
    x = 8,225.13

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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.