Home / 2,066.90-2,848.47-1,403.78

Finding the Fourth Proportional to 2,066.90, 2,848.47 and 1,403.78

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Solution

The fourth proportional to 2,066.90, 2,848.47 and 1,403.78 is: 1,934.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.90 : 2,848.47 = 1,403.78 : x
  2. Step 2: Convert to fraction form
    2,066.90/2,848.47 = 1,403.78/x
  3. Step 3: Cross multiply
    2,066.90x = 2,848.47 × 1,403.78
  4. Step 4: Simplify right side
    2,066.90x = 3,998,625.22
  5. Step 5: Solve for x
    x = 3,998,625.22/2,066.90
  6. Step 6: Final answer
    x = 1,934.60

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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.