Home / 2,918.77-4,027.90-1,870.83

Finding the Fourth Proportional to 2,918.77, 4,027.90 and 1,870.83

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Solution

The fourth proportional to 2,918.77, 4,027.90 and 1,870.83 is: 2,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.77 : 4,027.90 = 1,870.83 : x
  2. Step 2: Convert to fraction form
    2,918.77/4,027.90 = 1,870.83/x
  3. Step 3: Cross multiply
    2,918.77x = 4,027.90 × 1,870.83
  4. Step 4: Simplify right side
    2,918.77x = 7,535,506.80
  5. Step 5: Solve for x
    x = 7,535,506.80/2,918.77
  6. Step 6: Final answer
    x = 2,581.74

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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.