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Finding the Fourth Proportional to 2,852.70, 4,279.05 and 904.86

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Solution

The fourth proportional to 2,852.70, 4,279.05 and 904.86 is: 1,357.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,852.70 : 4,279.05 = 904.86 : x
  2. Step 2: Convert to fraction form
    2,852.70/4,279.05 = 904.86/x
  3. Step 3: Cross multiply
    2,852.70x = 4,279.05 × 904.86
  4. Step 4: Simplify right side
    2,852.70x = 3,871,941.18
  5. Step 5: Solve for x
    x = 3,871,941.18/2,852.70
  6. Step 6: Final answer
    x = 1,357.29

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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.