Home / 5,310.64-7,328.87-2,920.80

Finding the Fourth Proportional to 5,310.64, 7,328.87 and 2,920.80

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Solution

The fourth proportional to 5,310.64, 7,328.87 and 2,920.80 is: 4,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.64 : 7,328.87 = 2,920.80 : x
  2. Step 2: Convert to fraction form
    5,310.64/7,328.87 = 2,920.80/x
  3. Step 3: Cross multiply
    5,310.64x = 7,328.87 × 2,920.80
  4. Step 4: Simplify right side
    5,310.64x = 21,406,126.85
  5. Step 5: Solve for x
    x = 21,406,126.85/5,310.64
  6. Step 6: Final answer
    x = 4,030.80

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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.