Home / 1,949.34-2,689.15-1,417.40

Finding the Fourth Proportional to 1,949.34, 2,689.15 and 1,417.40

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Solution

The fourth proportional to 1,949.34, 2,689.15 and 1,417.40 is: 1,955.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,949.34 : 2,689.15 = 1,417.40 : x
  2. Step 2: Convert to fraction form
    1,949.34/2,689.15 = 1,417.40/x
  3. Step 3: Cross multiply
    1,949.34x = 2,689.15 × 1,417.40
  4. Step 4: Simplify right side
    1,949.34x = 3,811,580.68
  5. Step 5: Solve for x
    x = 3,811,580.68/1,949.34
  6. Step 6: Final answer
    x = 1,955.32

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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.