Home / 2,905.40-4,368.90-2,430.20

Finding the Fourth Proportional to 2,905.40, 4,368.90 and 2,430.20

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Solution

The fourth proportional to 2,905.40, 4,368.90 and 2,430.20 is: 3,654.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.40 : 4,368.90 = 2,430.20 : x
  2. Step 2: Convert to fraction form
    2,905.40/4,368.90 = 2,430.20/x
  3. Step 3: Cross multiply
    2,905.40x = 4,368.90 × 2,430.20
  4. Step 4: Simplify right side
    2,905.40x = 10,617,300.78
  5. Step 5: Solve for x
    x = 10,617,300.78/2,905.40
  6. Step 6: Final answer
    x = 3,654.33

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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.