Home / 2,918.10-4,028.34-1,870.76

Finding the Fourth Proportional to 2,918.10, 4,028.34 and 1,870.76

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Solution

The fourth proportional to 2,918.10, 4,028.34 and 1,870.76 is: 2,582.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.10 : 4,028.34 = 1,870.76 : x
  2. Step 2: Convert to fraction form
    2,918.10/4,028.34 = 1,870.76/x
  3. Step 3: Cross multiply
    2,918.10x = 4,028.34 × 1,870.76
  4. Step 4: Simplify right side
    2,918.10x = 7,536,057.34
  5. Step 5: Solve for x
    x = 7,536,057.34/2,918.10
  6. Step 6: Final answer
    x = 2,582.52

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Double scale
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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.