Home / 2,931.34-4,045.32-1,605.16

Finding the Fourth Proportional to 2,931.34, 4,045.32 and 1,605.16

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Solution

The fourth proportional to 2,931.34, 4,045.32 and 1,605.16 is: 2,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.34 : 4,045.32 = 1,605.16 : x
  2. Step 2: Convert to fraction form
    2,931.34/4,045.32 = 1,605.16/x
  3. Step 3: Cross multiply
    2,931.34x = 4,045.32 × 1,605.16
  4. Step 4: Simplify right side
    2,931.34x = 6,493,385.85
  5. Step 5: Solve for x
    x = 6,493,385.85/2,931.34
  6. Step 6: Final answer
    x = 2,215.16

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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.