Home / 1,108.81-1,655.29-1,070.34

Finding the Fourth Proportional to 1,108.81, 1,655.29 and 1,070.34

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Solution

The fourth proportional to 1,108.81, 1,655.29 and 1,070.34 is: 1,597.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.81 : 1,655.29 = 1,070.34 : x
  2. Step 2: Convert to fraction form
    1,108.81/1,655.29 = 1,070.34/x
  3. Step 3: Cross multiply
    1,108.81x = 1,655.29 × 1,070.34
  4. Step 4: Simplify right side
    1,108.81x = 1,771,723.10
  5. Step 5: Solve for x
    x = 1,771,723.10/1,108.81
  6. Step 6: Final answer
    x = 1,597.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.