Home / 2,088.40-3,133.46-917.80

Finding the Fourth Proportional to 2,088.40, 3,133.46 and 917.80

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Solution

The fourth proportional to 2,088.40, 3,133.46 and 917.80 is: 1,377.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,088.40 : 3,133.46 = 917.80 : x
  2. Step 2: Convert to fraction form
    2,088.40/3,133.46 = 917.80/x
  3. Step 3: Cross multiply
    2,088.40x = 3,133.46 × 917.80
  4. Step 4: Simplify right side
    2,088.40x = 2,875,889.59
  5. Step 5: Solve for x
    x = 2,875,889.59/2,088.40
  6. Step 6: Final answer
    x = 1,377.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.