Home / 8,640.36-12,962.20-5,983.16

Finding the Fourth Proportional to 8,640.36, 12,962.20 and 5,983.16

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Solution

The fourth proportional to 8,640.36, 12,962.20 and 5,983.16 is: 8,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.36 : 12,962.20 = 5,983.16 : x
  2. Step 2: Convert to fraction form
    8,640.36/12,962.20 = 5,983.16/x
  3. Step 3: Cross multiply
    8,640.36x = 12,962.20 × 5,983.16
  4. Step 4: Simplify right side
    8,640.36x = 77,554,916.55
  5. Step 5: Solve for x
    x = 77,554,916.55/8,640.36
  6. Step 6: Final answer
    x = 8,975.89

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1.5x scale

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.