Home / 1,521.05-2,280.35-654.75

Finding the Fourth Proportional to 1,521.05, 2,280.35 and 654.75

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Solution

The fourth proportional to 1,521.05, 2,280.35 and 654.75 is: 981.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.05 : 2,280.35 = 654.75 : x
  2. Step 2: Convert to fraction form
    1,521.05/2,280.35 = 654.75/x
  3. Step 3: Cross multiply
    1,521.05x = 2,280.35 × 654.75
  4. Step 4: Simplify right side
    1,521.05x = 1,493,060.80
  5. Step 5: Solve for x
    x = 1,493,060.80/1,521.05
  6. Step 6: Final answer
    x = 981.60

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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.