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Finding the Fourth Proportional to 1,603.90, 2,407.68 and 1,498.20

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Solution

The fourth proportional to 1,603.90, 2,407.68 and 1,498.20 is: 2,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.90 : 2,407.68 = 1,498.20 : x
  2. Step 2: Convert to fraction form
    1,603.90/2,407.68 = 1,498.20/x
  3. Step 3: Cross multiply
    1,603.90x = 2,407.68 × 1,498.20
  4. Step 4: Simplify right side
    1,603.90x = 3,607,186.18
  5. Step 5: Solve for x
    x = 3,607,186.18/1,603.90
  6. Step 6: Final answer
    x = 2,249.01

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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.