Home / 1,117.30-1,541.85-619.93

Finding the Fourth Proportional to 1,117.30, 1,541.85 and 619.93

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Solution

The fourth proportional to 1,117.30, 1,541.85 and 619.93 is: 855.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117.30 : 1,541.85 = 619.93 : x
  2. Step 2: Convert to fraction form
    1,117.30/1,541.85 = 619.93/x
  3. Step 3: Cross multiply
    1,117.30x = 1,541.85 × 619.93
  4. Step 4: Simplify right side
    1,117.30x = 955,839.07
  5. Step 5: Solve for x
    x = 955,839.07/1,117.30
  6. Step 6: Final answer
    x = 855.49

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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.