Home / 1,870.96-2,575.80-1,778.64

Finding the Fourth Proportional to 1,870.96, 2,575.80 and 1,778.64

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Solution

The fourth proportional to 1,870.96, 2,575.80 and 1,778.64 is: 2,448.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,870.96 : 2,575.80 = 1,778.64 : x
  2. Step 2: Convert to fraction form
    1,870.96/2,575.80 = 1,778.64/x
  3. Step 3: Cross multiply
    1,870.96x = 2,575.80 × 1,778.64
  4. Step 4: Simplify right side
    1,870.96x = 4,581,420.91
  5. Step 5: Solve for x
    x = 4,581,420.91/1,870.96
  6. Step 6: Final answer
    x = 2,448.70

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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.