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Finding the Fourth Proportional to 1,403.58, 2,103.99 and 580.71

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Solution

The fourth proportional to 1,403.58, 2,103.99 and 580.71 is: 870.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.58 : 2,103.99 = 580.71 : x
  2. Step 2: Convert to fraction form
    1,403.58/2,103.99 = 580.71/x
  3. Step 3: Cross multiply
    1,403.58x = 2,103.99 × 580.71
  4. Step 4: Simplify right side
    1,403.58x = 1,221,808.03
  5. Step 5: Solve for x
    x = 1,221,808.03/1,403.58
  6. Step 6: Final answer
    x = 870.49

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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.