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Finding the Fourth Proportional to 1,874.04, 2,811.05 and 641.46

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Solution

The fourth proportional to 1,874.04, 2,811.05 and 641.46 is: 962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,874.04 : 2,811.05 = 641.46 : x
  2. Step 2: Convert to fraction form
    1,874.04/2,811.05 = 641.46/x
  3. Step 3: Cross multiply
    1,874.04x = 2,811.05 × 641.46
  4. Step 4: Simplify right side
    1,874.04x = 1,803,176.13
  5. Step 5: Solve for x
    x = 1,803,176.13/1,874.04
  6. Step 6: Final answer
    x = 962.19

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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.