Home / 7,962.40-11,929.20-4,880.80

Finding the Fourth Proportional to 7,962.40, 11,929.20 and 4,880.80

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Solution

The fourth proportional to 7,962.40, 11,929.20 and 4,880.80 is: 7,312.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,962.40 : 11,929.20 = 4,880.80 : x
  2. Step 2: Convert to fraction form
    7,962.40/11,929.20 = 4,880.80/x
  3. Step 3: Cross multiply
    7,962.40x = 11,929.20 × 4,880.80
  4. Step 4: Simplify right side
    7,962.40x = 58,224,039.36
  5. Step 5: Solve for x
    x = 58,224,039.36/7,962.40
  6. Step 6: Final answer
    x = 7,312.37

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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.