Home / 7,128.55-10,693.01-3,379.45

Finding the Fourth Proportional to 7,128.55, 10,693.01 and 3,379.45

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Solution

The fourth proportional to 7,128.55, 10,693.01 and 3,379.45 is: 5,069.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.55 : 10,693.01 = 3,379.45 : x
  2. Step 2: Convert to fraction form
    7,128.55/10,693.01 = 3,379.45/x
  3. Step 3: Cross multiply
    7,128.55x = 10,693.01 × 3,379.45
  4. Step 4: Simplify right side
    7,128.55x = 36,136,492.64
  5. Step 5: Solve for x
    x = 36,136,492.64/7,128.55
  6. Step 6: Final answer
    x = 5,069.26

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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.