Home / 1,430.60-2,144.55-1,284.80

Finding the Fourth Proportional to 1,430.60, 2,144.55 and 1,284.80

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Solution

The fourth proportional to 1,430.60, 2,144.55 and 1,284.80 is: 1,925.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430.60 : 2,144.55 = 1,284.80 : x
  2. Step 2: Convert to fraction form
    1,430.60/2,144.55 = 1,284.80/x
  3. Step 3: Cross multiply
    1,430.60x = 2,144.55 × 1,284.80
  4. Step 4: Simplify right side
    1,430.60x = 2,755,317.84
  5. Step 5: Solve for x
    x = 2,755,317.84/1,430.60
  6. Step 6: Final answer
    x = 1,925.99

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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.