Home / 5,390.05-7,430.84-3,688.24

Finding the Fourth Proportional to 5,390.05, 7,430.84 and 3,688.24

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Solution

The fourth proportional to 5,390.05, 7,430.84 and 3,688.24 is: 5,084.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.05 : 7,430.84 = 3,688.24 : x
  2. Step 2: Convert to fraction form
    5,390.05/7,430.84 = 3,688.24/x
  3. Step 3: Cross multiply
    5,390.05x = 7,430.84 × 3,688.24
  4. Step 4: Simplify right side
    5,390.05x = 27,406,684.17
  5. Step 5: Solve for x
    x = 27,406,684.17/5,390.05
  6. Step 6: Final answer
    x = 5,084.69

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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.