Home / 2,931.43-4,045.36-1,605.15

Finding the Fourth Proportional to 2,931.43, 4,045.36 and 1,605.15

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Solution

The fourth proportional to 2,931.43, 4,045.36 and 1,605.15 is: 2,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.43 : 4,045.36 = 1,605.15 : x
  2. Step 2: Convert to fraction form
    2,931.43/4,045.36 = 1,605.15/x
  3. Step 3: Cross multiply
    2,931.43x = 4,045.36 × 1,605.15
  4. Step 4: Simplify right side
    2,931.43x = 6,493,409.60
  5. Step 5: Solve for x
    x = 6,493,409.60/2,931.43
  6. Step 6: Final answer
    x = 2,215.10

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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.