Home / 2,779.80-3,836.20-1,585

Finding the Fourth Proportional to 2,779.80, 3,836.20 and 1,585

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Solution

The fourth proportional to 2,779.80, 3,836.20 and 1,585 is: 2,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.80 : 3,836.20 = 1,585 : x
  2. Step 2: Convert to fraction form
    2,779.80/3,836.20 = 1,585/x
  3. Step 3: Cross multiply
    2,779.80x = 3,836.20 × 1,585
  4. Step 4: Simplify right side
    2,779.80x = 6,080,377
  5. Step 5: Solve for x
    x = 6,080,377/2,779.80
  6. Step 6: Final answer
    x = 2,187.34

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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.