Home / 1,126.81-1,545.25-1,118.17

Finding the Fourth Proportional to 1,126.81, 1,545.25 and 1,118.17

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Solution

The fourth proportional to 1,126.81, 1,545.25 and 1,118.17 is: 1,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.81 : 1,545.25 = 1,118.17 : x
  2. Step 2: Convert to fraction form
    1,126.81/1,545.25 = 1,118.17/x
  3. Step 3: Cross multiply
    1,126.81x = 1,545.25 × 1,118.17
  4. Step 4: Simplify right side
    1,126.81x = 1,727,852.19
  5. Step 5: Solve for x
    x = 1,727,852.19/1,126.81
  6. Step 6: Final answer
    x = 1,533.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.