Home / 1,620.28-2,430.15-525.43

Finding the Fourth Proportional to 1,620.28, 2,430.15 and 525.43

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Solution

The fourth proportional to 1,620.28, 2,430.15 and 525.43 is: 788.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.28 : 2,430.15 = 525.43 : x
  2. Step 2: Convert to fraction form
    1,620.28/2,430.15 = 525.43/x
  3. Step 3: Cross multiply
    1,620.28x = 2,430.15 × 525.43
  4. Step 4: Simplify right side
    1,620.28x = 1,276,873.71
  5. Step 5: Solve for x
    x = 1,276,873.71/1,620.28
  6. Step 6: Final answer
    x = 788.06

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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.