Home / 2,783.52-3,840.30-1,587.65

Finding the Fourth Proportional to 2,783.52, 3,840.30 and 1,587.65

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Solution

The fourth proportional to 2,783.52, 3,840.30 and 1,587.65 is: 2,190.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.52 : 3,840.30 = 1,587.65 : x
  2. Step 2: Convert to fraction form
    2,783.52/3,840.30 = 1,587.65/x
  3. Step 3: Cross multiply
    2,783.52x = 3,840.30 × 1,587.65
  4. Step 4: Simplify right side
    2,783.52x = 6,097,045.19
  5. Step 5: Solve for x
    x = 6,097,045.19/2,783.52
  6. Step 6: Final answer
    x = 2,190.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.