Home / 7,709.04-10,638.48-4,172.24

Finding the Fourth Proportional to 7,709.04, 10,638.48 and 4,172.24

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Solution

The fourth proportional to 7,709.04, 10,638.48 and 4,172.24 is: 5,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.04 : 10,638.48 = 4,172.24 : x
  2. Step 2: Convert to fraction form
    7,709.04/10,638.48 = 4,172.24/x
  3. Step 3: Cross multiply
    7,709.04x = 10,638.48 × 4,172.24
  4. Step 4: Simplify right side
    7,709.04x = 44,386,238.60
  5. Step 5: Solve for x
    x = 44,386,238.60/7,709.04
  6. Step 6: Final answer
    x = 5,757.69

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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.