Home / 2,931.66-4,045.62-1,605.33

Finding the Fourth Proportional to 2,931.66, 4,045.62 and 1,605.33

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Solution

The fourth proportional to 2,931.66, 4,045.62 and 1,605.33 is: 2,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.66 : 4,045.62 = 1,605.33 : x
  2. Step 2: Convert to fraction form
    2,931.66/4,045.62 = 1,605.33/x
  3. Step 3: Cross multiply
    2,931.66x = 4,045.62 × 1,605.33
  4. Step 4: Simplify right side
    2,931.66x = 6,494,555.15
  5. Step 5: Solve for x
    x = 6,494,555.15/2,931.66
  6. Step 6: Final answer
    x = 2,215.32

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1.5x scale

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.