Home / 1,285.24-1,925.96-1,055.74

Finding the Fourth Proportional to 1,285.24, 1,925.96 and 1,055.74

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Solution

The fourth proportional to 1,285.24, 1,925.96 and 1,055.74 is: 1,582.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.24 : 1,925.96 = 1,055.74 : x
  2. Step 2: Convert to fraction form
    1,285.24/1,925.96 = 1,055.74/x
  3. Step 3: Cross multiply
    1,285.24x = 1,925.96 × 1,055.74
  4. Step 4: Simplify right side
    1,285.24x = 2,033,313.01
  5. Step 5: Solve for x
    x = 2,033,313.01/1,285.24
  6. Step 6: Final answer
    x = 1,582.05

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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.