Home / 1,899.64-2,621.52-1,113.76

Finding the Fourth Proportional to 1,899.64, 2,621.52 and 1,113.76

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Solution

The fourth proportional to 1,899.64, 2,621.52 and 1,113.76 is: 1,537.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.64 : 2,621.52 = 1,113.76 : x
  2. Step 2: Convert to fraction form
    1,899.64/2,621.52 = 1,113.76/x
  3. Step 3: Cross multiply
    1,899.64x = 2,621.52 × 1,113.76
  4. Step 4: Simplify right side
    1,899.64x = 2,919,744.12
  5. Step 5: Solve for x
    x = 2,919,744.12/1,899.64
  6. Step 6: Final answer
    x = 1,537.00

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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.