Home / 2,275.19-3,140.64-1,531.27

Finding the Fourth Proportional to 2,275.19, 3,140.64 and 1,531.27

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Solution

The fourth proportional to 2,275.19, 3,140.64 and 1,531.27 is: 2,113.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.19 : 3,140.64 = 1,531.27 : x
  2. Step 2: Convert to fraction form
    2,275.19/3,140.64 = 1,531.27/x
  3. Step 3: Cross multiply
    2,275.19x = 3,140.64 × 1,531.27
  4. Step 4: Simplify right side
    2,275.19x = 4,809,167.81
  5. Step 5: Solve for x
    x = 4,809,167.81/2,275.19
  6. Step 6: Final answer
    x = 2,113.74

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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.