Home / 1,380.61-2,071.00-558.90

Finding the Fourth Proportional to 1,380.61, 2,071.00 and 558.90

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Solution

The fourth proportional to 1,380.61, 2,071.00 and 558.90 is: 838.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380.61 : 2,071.00 = 558.90 : x
  2. Step 2: Convert to fraction form
    1,380.61/2,071.00 = 558.90/x
  3. Step 3: Cross multiply
    1,380.61x = 2,071.00 × 558.90
  4. Step 4: Simplify right side
    1,380.61x = 1,157,482.60
  5. Step 5: Solve for x
    x = 1,157,482.60/1,380.61
  6. Step 6: Final answer
    x = 838.38

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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.