Home / 1,607.04-2,217.72-908.40

Finding the Fourth Proportional to 1,607.04, 2,217.72 and 908.40

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Solution

The fourth proportional to 1,607.04, 2,217.72 and 908.40 is: 1,253.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.04 : 2,217.72 = 908.40 : x
  2. Step 2: Convert to fraction form
    1,607.04/2,217.72 = 908.40/x
  3. Step 3: Cross multiply
    1,607.04x = 2,217.72 × 908.40
  4. Step 4: Simplify right side
    1,607.04x = 2,014,576.85
  5. Step 5: Solve for x
    x = 2,014,576.85/1,607.04
  6. Step 6: Final answer
    x = 1,253.59

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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.