Home / 2,070.40-2,858.88-1,374.88

Finding the Fourth Proportional to 2,070.40, 2,858.88 and 1,374.88

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Solution

The fourth proportional to 2,070.40, 2,858.88 and 1,374.88 is: 1,898.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.40 : 2,858.88 = 1,374.88 : x
  2. Step 2: Convert to fraction form
    2,070.40/2,858.88 = 1,374.88/x
  3. Step 3: Cross multiply
    2,070.40x = 2,858.88 × 1,374.88
  4. Step 4: Simplify right side
    2,070.40x = 3,930,616.93
  5. Step 5: Solve for x
    x = 3,930,616.93/2,070.40
  6. Step 6: Final answer
    x = 1,898.48

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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.