Home / 1,878.79-2,593.33-1,319.40

Finding the Fourth Proportional to 1,878.79, 2,593.33 and 1,319.40

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Solution

The fourth proportional to 1,878.79, 2,593.33 and 1,319.40 is: 1,821.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.79 : 2,593.33 = 1,319.40 : x
  2. Step 2: Convert to fraction form
    1,878.79/2,593.33 = 1,319.40/x
  3. Step 3: Cross multiply
    1,878.79x = 2,593.33 × 1,319.40
  4. Step 4: Simplify right side
    1,878.79x = 3,421,626.64
  5. Step 5: Solve for x
    x = 3,421,626.64/1,878.79
  6. Step 6: Final answer
    x = 1,821.19

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Double scale
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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.