Home / 7,509.76-10,356.10-5,381.54

Finding the Fourth Proportional to 7,509.76, 10,356.10 and 5,381.54

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Solution

The fourth proportional to 7,509.76, 10,356.10 and 5,381.54 is: 7,421.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,509.76 : 10,356.10 = 5,381.54 : x
  2. Step 2: Convert to fraction form
    7,509.76/10,356.10 = 5,381.54/x
  3. Step 3: Cross multiply
    7,509.76x = 10,356.10 × 5,381.54
  4. Step 4: Simplify right side
    7,509.76x = 55,731,770.27
  5. Step 5: Solve for x
    x = 55,731,770.27/7,509.76
  6. Step 6: Final answer
    x = 7,421.24

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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.