Home / 8,918.79-12,302.53-5,731.01

Finding the Fourth Proportional to 8,918.79, 12,302.53 and 5,731.01

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Solution

The fourth proportional to 8,918.79, 12,302.53 and 5,731.01 is: 7,905.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.79 : 12,302.53 = 5,731.01 : x
  2. Step 2: Convert to fraction form
    8,918.79/12,302.53 = 5,731.01/x
  3. Step 3: Cross multiply
    8,918.79x = 12,302.53 × 5,731.01
  4. Step 4: Simplify right side
    8,918.79x = 70,505,922.46
  5. Step 5: Solve for x
    x = 70,505,922.46/8,918.79
  6. Step 6: Final answer
    x = 7,905.32

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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.