Home / 1,603.08-2,211.18-1,105.74

Finding the Fourth Proportional to 1,603.08, 2,211.18 and 1,105.74

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Solution

The fourth proportional to 1,603.08, 2,211.18 and 1,105.74 is: 1,525.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.08 : 2,211.18 = 1,105.74 : x
  2. Step 2: Convert to fraction form
    1,603.08/2,211.18 = 1,105.74/x
  3. Step 3: Cross multiply
    1,603.08x = 2,211.18 × 1,105.74
  4. Step 4: Simplify right side
    1,603.08x = 2,444,990.17
  5. Step 5: Solve for x
    x = 2,444,990.17/1,603.08
  6. Step 6: Final answer
    x = 1,525.18

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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.