Home / 5,377.67-7,420.51-3,140.09

Finding the Fourth Proportional to 5,377.67, 7,420.51 and 3,140.09

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Solution

The fourth proportional to 5,377.67, 7,420.51 and 3,140.09 is: 4,332.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,377.67 : 7,420.51 = 3,140.09 : x
  2. Step 2: Convert to fraction form
    5,377.67/7,420.51 = 3,140.09/x
  3. Step 3: Cross multiply
    5,377.67x = 7,420.51 × 3,140.09
  4. Step 4: Simplify right side
    5,377.67x = 23,301,069.25
  5. Step 5: Solve for x
    x = 23,301,069.25/5,377.67
  6. Step 6: Final answer
    x = 4,332.93

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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.