Home / 1,370.39-2,055.58-1,126.17

Finding the Fourth Proportional to 1,370.39, 2,055.58 and 1,126.17

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Solution

The fourth proportional to 1,370.39, 2,055.58 and 1,126.17 is: 1,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.39 : 2,055.58 = 1,126.17 : x
  2. Step 2: Convert to fraction form
    1,370.39/2,055.58 = 1,126.17/x
  3. Step 3: Cross multiply
    1,370.39x = 2,055.58 × 1,126.17
  4. Step 4: Simplify right side
    1,370.39x = 2,314,929.71
  5. Step 5: Solve for x
    x = 2,314,929.71/1,370.39
  6. Step 6: Final answer
    x = 1,689.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.