Home / 1,911.18-2,637.53-1,071.86

Finding the Fourth Proportional to 1,911.18, 2,637.53 and 1,071.86

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Solution

The fourth proportional to 1,911.18, 2,637.53 and 1,071.86 is: 1,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.18 : 2,637.53 = 1,071.86 : x
  2. Step 2: Convert to fraction form
    1,911.18/2,637.53 = 1,071.86/x
  3. Step 3: Cross multiply
    1,911.18x = 2,637.53 × 1,071.86
  4. Step 4: Simplify right side
    1,911.18x = 2,827,054.67
  5. Step 5: Solve for x
    x = 2,827,054.67/1,911.18
  6. Step 6: Final answer
    x = 1,479.22

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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.