Home / 5,130.24-7,072.72-4,380.96

Finding the Fourth Proportional to 5,130.24, 7,072.72 and 4,380.96

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Solution

The fourth proportional to 5,130.24, 7,072.72 and 4,380.96 is: 6,039.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.24 : 7,072.72 = 4,380.96 : x
  2. Step 2: Convert to fraction form
    5,130.24/7,072.72 = 4,380.96/x
  3. Step 3: Cross multiply
    5,130.24x = 7,072.72 × 4,380.96
  4. Step 4: Simplify right side
    5,130.24x = 30,985,303.41
  5. Step 5: Solve for x
    x = 30,985,303.41/5,130.24
  6. Step 6: Final answer
    x = 6,039.74

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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.