Home / 1,533.45-2,116.29-870.33

Finding the Fourth Proportional to 1,533.45, 2,116.29 and 870.33

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Solution

The fourth proportional to 1,533.45, 2,116.29 and 870.33 is: 1,201.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.45 : 2,116.29 = 870.33 : x
  2. Step 2: Convert to fraction form
    1,533.45/2,116.29 = 870.33/x
  3. Step 3: Cross multiply
    1,533.45x = 2,116.29 × 870.33
  4. Step 4: Simplify right side
    1,533.45x = 1,841,870.68
  5. Step 5: Solve for x
    x = 1,841,870.68/1,533.45
  6. Step 6: Final answer
    x = 1,201.13

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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.