Home / 3,051.88-4,210.78-1,870.90

Finding the Fourth Proportional to 3,051.88, 4,210.78 and 1,870.90

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Solution

The fourth proportional to 3,051.88, 4,210.78 and 1,870.90 is: 2,581.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,051.88 : 4,210.78 = 1,870.90 : x
  2. Step 2: Convert to fraction form
    3,051.88/4,210.78 = 1,870.90/x
  3. Step 3: Cross multiply
    3,051.88x = 4,210.78 × 1,870.90
  4. Step 4: Simplify right side
    3,051.88x = 7,877,948.30
  5. Step 5: Solve for x
    x = 7,877,948.30/3,051.88
  6. Step 6: Final answer
    x = 2,581.34

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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.