Home / 2,918.69-4,027.79-1,870.75

Finding the Fourth Proportional to 2,918.69, 4,027.79 and 1,870.75

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Solution

The fourth proportional to 2,918.69, 4,027.79 and 1,870.75 is: 2,581.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.69 : 4,027.79 = 1,870.75 : x
  2. Step 2: Convert to fraction form
    2,918.69/4,027.79 = 1,870.75/x
  3. Step 3: Cross multiply
    2,918.69x = 4,027.79 × 1,870.75
  4. Step 4: Simplify right side
    2,918.69x = 7,534,988.14
  5. Step 5: Solve for x
    x = 7,534,988.14/2,918.69
  6. Step 6: Final answer
    x = 2,581.63

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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.