Home / 7,120.08-9,824.52-4,136.40

Finding the Fourth Proportional to 7,120.08, 9,824.52 and 4,136.40

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Solution

The fourth proportional to 7,120.08, 9,824.52 and 4,136.40 is: 5,707.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.08 : 9,824.52 = 4,136.40 : x
  2. Step 2: Convert to fraction form
    7,120.08/9,824.52 = 4,136.40/x
  3. Step 3: Cross multiply
    7,120.08x = 9,824.52 × 4,136.40
  4. Step 4: Simplify right side
    7,120.08x = 40,638,144.53
  5. Step 5: Solve for x
    x = 40,638,144.53/7,120.08
  6. Step 6: Final answer
    x = 5,707.54

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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.