Home / 1,565.68-2,160.48-936.08

Finding the Fourth Proportional to 1,565.68, 2,160.48 and 936.08

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Solution

The fourth proportional to 1,565.68, 2,160.48 and 936.08 is: 1,291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565.68 : 2,160.48 = 936.08 : x
  2. Step 2: Convert to fraction form
    1,565.68/2,160.48 = 936.08/x
  3. Step 3: Cross multiply
    1,565.68x = 2,160.48 × 936.08
  4. Step 4: Simplify right side
    1,565.68x = 2,022,386.37
  5. Step 5: Solve for x
    x = 2,022,386.37/1,565.68
  6. Step 6: Final answer
    x = 1,291.70

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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.