Home / 1,646.52-2,272.40-918.99

Finding the Fourth Proportional to 1,646.52, 2,272.40 and 918.99

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Solution

The fourth proportional to 1,646.52, 2,272.40 and 918.99 is: 1,268.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.52 : 2,272.40 = 918.99 : x
  2. Step 2: Convert to fraction form
    1,646.52/2,272.40 = 918.99/x
  3. Step 3: Cross multiply
    1,646.52x = 2,272.40 × 918.99
  4. Step 4: Simplify right side
    1,646.52x = 2,088,308.28
  5. Step 5: Solve for x
    x = 2,088,308.28/1,646.52
  6. Step 6: Final answer
    x = 1,268.32

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1.5x scale

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.