Home / 2,429.80-3,354.98-1,869.40

Finding the Fourth Proportional to 2,429.80, 3,354.98 and 1,869.40

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Solution

The fourth proportional to 2,429.80, 3,354.98 and 1,869.40 is: 2,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,429.80 : 3,354.98 = 1,869.40 : x
  2. Step 2: Convert to fraction form
    2,429.80/3,354.98 = 1,869.40/x
  3. Step 3: Cross multiply
    2,429.80x = 3,354.98 × 1,869.40
  4. Step 4: Simplify right side
    2,429.80x = 6,271,799.61
  5. Step 5: Solve for x
    x = 6,271,799.61/2,429.80
  6. Step 6: Final answer
    x = 2,581.20

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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.