Home / 3,130.72-4,319.04-1,888

Finding the Fourth Proportional to 3,130.72, 4,319.04 and 1,888

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Solution

The fourth proportional to 3,130.72, 4,319.04 and 1,888 is: 2,604.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.72 : 4,319.04 = 1,888 : x
  2. Step 2: Convert to fraction form
    3,130.72/4,319.04 = 1,888/x
  3. Step 3: Cross multiply
    3,130.72x = 4,319.04 × 1,888
  4. Step 4: Simplify right side
    3,130.72x = 8,154,347.52
  5. Step 5: Solve for x
    x = 8,154,347.52/3,130.72
  6. Step 6: Final answer
    x = 2,604.62

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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.