Home / 4,931-7,394.26-1,420.19

Finding the Fourth Proportional to 4,931, 7,394.26 and 1,420.19

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Solution

The fourth proportional to 4,931, 7,394.26 and 1,420.19 is: 2,129.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,931 : 7,394.26 = 1,420.19 : x
  2. Step 2: Convert to fraction form
    4,931/7,394.26 = 1,420.19/x
  3. Step 3: Cross multiply
    4,931x = 7,394.26 × 1,420.19
  4. Step 4: Simplify right side
    4,931x = 10,501,254.11
  5. Step 5: Solve for x
    x = 10,501,254.11/4,931
  6. Step 6: Final answer
    x = 2,129.64

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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.