Home / 2,985.41-4,119.59-1,640.79

Finding the Fourth Proportional to 2,985.41, 4,119.59 and 1,640.79

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Solution

The fourth proportional to 2,985.41, 4,119.59 and 1,640.79 is: 2,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.41 : 4,119.59 = 1,640.79 : x
  2. Step 2: Convert to fraction form
    2,985.41/4,119.59 = 1,640.79/x
  3. Step 3: Cross multiply
    2,985.41x = 4,119.59 × 1,640.79
  4. Step 4: Simplify right side
    2,985.41x = 6,759,386.18
  5. Step 5: Solve for x
    x = 6,759,386.18/2,985.41
  6. Step 6: Final answer
    x = 2,264.14

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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.