Home / 2,106.02-3,159.30-644.90

Finding the Fourth Proportional to 2,106.02, 3,159.30 and 644.90

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Solution

The fourth proportional to 2,106.02, 3,159.30 and 644.90 is: 967.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.02 : 3,159.30 = 644.90 : x
  2. Step 2: Convert to fraction form
    2,106.02/3,159.30 = 644.90/x
  3. Step 3: Cross multiply
    2,106.02x = 3,159.30 × 644.90
  4. Step 4: Simplify right side
    2,106.02x = 2,037,432.57
  5. Step 5: Solve for x
    x = 2,037,432.57/2,106.02
  6. Step 6: Final answer
    x = 967.43

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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.