Home / 1,513.70-2,088.16-923.21

Finding the Fourth Proportional to 1,513.70, 2,088.16 and 923.21

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Solution

The fourth proportional to 1,513.70, 2,088.16 and 923.21 is: 1,273.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.70 : 2,088.16 = 923.21 : x
  2. Step 2: Convert to fraction form
    1,513.70/2,088.16 = 923.21/x
  3. Step 3: Cross multiply
    1,513.70x = 2,088.16 × 923.21
  4. Step 4: Simplify right side
    1,513.70x = 1,927,810.47
  5. Step 5: Solve for x
    x = 1,927,810.47/1,513.70
  6. Step 6: Final answer
    x = 1,273.58

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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.