Home / 7,421.39-11,139.76-4,973.32

Finding the Fourth Proportional to 7,421.39, 11,139.76 and 4,973.32

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Solution

The fourth proportional to 7,421.39, 11,139.76 and 4,973.32 is: 7,465.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.39 : 11,139.76 = 4,973.32 : x
  2. Step 2: Convert to fraction form
    7,421.39/11,139.76 = 4,973.32/x
  3. Step 3: Cross multiply
    7,421.39x = 11,139.76 × 4,973.32
  4. Step 4: Simplify right side
    7,421.39x = 55,401,548.68
  5. Step 5: Solve for x
    x = 55,401,548.68/7,421.39
  6. Step 6: Final answer
    x = 7,465.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.