Home / 1,215.16-1,824.94-1,117.48

Finding the Fourth Proportional to 1,215.16, 1,824.94 and 1,117.48

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Solution

The fourth proportional to 1,215.16, 1,824.94 and 1,117.48 is: 1,678.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.16 : 1,824.94 = 1,117.48 : x
  2. Step 2: Convert to fraction form
    1,215.16/1,824.94 = 1,117.48/x
  3. Step 3: Cross multiply
    1,215.16x = 1,824.94 × 1,117.48
  4. Step 4: Simplify right side
    1,215.16x = 2,039,332.17
  5. Step 5: Solve for x
    x = 2,039,332.17/1,215.16
  6. Step 6: Final answer
    x = 1,678.24

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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.