Home / 2,159.11-2,980.71-1,530.16

Finding the Fourth Proportional to 2,159.11, 2,980.71 and 1,530.16

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Solution

The fourth proportional to 2,159.11, 2,980.71 and 1,530.16 is: 2,112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.11 : 2,980.71 = 1,530.16 : x
  2. Step 2: Convert to fraction form
    2,159.11/2,980.71 = 1,530.16/x
  3. Step 3: Cross multiply
    2,159.11x = 2,980.71 × 1,530.16
  4. Step 4: Simplify right side
    2,159.11x = 4,560,963.21
  5. Step 5: Solve for x
    x = 4,560,963.21/2,159.11
  6. Step 6: Final answer
    x = 2,112.43

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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.