Home / 1,646.23-2,272.62-947.47

Finding the Fourth Proportional to 1,646.23, 2,272.62 and 947.47

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Solution

The fourth proportional to 1,646.23, 2,272.62 and 947.47 is: 1,307.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.23 : 2,272.62 = 947.47 : x
  2. Step 2: Convert to fraction form
    1,646.23/2,272.62 = 947.47/x
  3. Step 3: Cross multiply
    1,646.23x = 2,272.62 × 947.47
  4. Step 4: Simplify right side
    1,646.23x = 2,153,239.27
  5. Step 5: Solve for x
    x = 2,153,239.27/1,646.23
  6. Step 6: Final answer
    x = 1,307.98

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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.