Home / 2,145.47-2,960.93-1,305.97

Finding the Fourth Proportional to 2,145.47, 2,960.93 and 1,305.97

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Solution

The fourth proportional to 2,145.47, 2,960.93 and 1,305.97 is: 1,802.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.47 : 2,960.93 = 1,305.97 : x
  2. Step 2: Convert to fraction form
    2,145.47/2,960.93 = 1,305.97/x
  3. Step 3: Cross multiply
    2,145.47x = 2,960.93 × 1,305.97
  4. Step 4: Simplify right side
    2,145.47x = 3,866,881.61
  5. Step 5: Solve for x
    x = 3,866,881.61/2,145.47
  6. Step 6: Final answer
    x = 1,802.35

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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.