Home / 1,603.10-2,212.35-1,071.05

Finding the Fourth Proportional to 1,603.10, 2,212.35 and 1,071.05

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Solution

The fourth proportional to 1,603.10, 2,212.35 and 1,071.05 is: 1,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.10 : 2,212.35 = 1,071.05 : x
  2. Step 2: Convert to fraction form
    1,603.10/2,212.35 = 1,071.05/x
  3. Step 3: Cross multiply
    1,603.10x = 2,212.35 × 1,071.05
  4. Step 4: Simplify right side
    1,603.10x = 2,369,537.47
  5. Step 5: Solve for x
    x = 2,369,537.47/1,603.10
  6. Step 6: Final answer
    x = 1,478.10

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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.