Home / 2,985.19-4,119.21-1,658.71

Finding the Fourth Proportional to 2,985.19, 4,119.21 and 1,658.71

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Solution

The fourth proportional to 2,985.19, 4,119.21 and 1,658.71 is: 2,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.19 : 4,119.21 = 1,658.71 : x
  2. Step 2: Convert to fraction form
    2,985.19/4,119.21 = 1,658.71/x
  3. Step 3: Cross multiply
    2,985.19x = 4,119.21 × 1,658.71
  4. Step 4: Simplify right side
    2,985.19x = 6,832,574.82
  5. Step 5: Solve for x
    x = 6,832,574.82/2,985.19
  6. Step 6: Final answer
    x = 2,288.82

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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.