Home / 1,899.61-2,621.48-1,113.67

Finding the Fourth Proportional to 1,899.61, 2,621.48 and 1,113.67

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Solution

The fourth proportional to 1,899.61, 2,621.48 and 1,113.67 is: 1,536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,899.61 : 2,621.48 = 1,113.67 : x
  2. Step 2: Convert to fraction form
    1,899.61/2,621.48 = 1,113.67/x
  3. Step 3: Cross multiply
    1,899.61x = 2,621.48 × 1,113.67
  4. Step 4: Simplify right side
    1,899.61x = 2,919,444.96
  5. Step 5: Solve for x
    x = 2,919,444.96/1,899.61
  6. Step 6: Final answer
    x = 1,536.87

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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.