Home / 1,763.33-2,430.60-1,389.74

Finding the Fourth Proportional to 1,763.33, 2,430.60 and 1,389.74

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Solution

The fourth proportional to 1,763.33, 2,430.60 and 1,389.74 is: 1,915.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.33 : 2,430.60 = 1,389.74 : x
  2. Step 2: Convert to fraction form
    1,763.33/2,430.60 = 1,389.74/x
  3. Step 3: Cross multiply
    1,763.33x = 2,430.60 × 1,389.74
  4. Step 4: Simplify right side
    1,763.33x = 3,377,902.04
  5. Step 5: Solve for x
    x = 3,377,902.04/1,763.33
  6. Step 6: Final answer
    x = 1,915.64

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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.