Home / 2,870.18-4,305.42-922.40

Finding the Fourth Proportional to 2,870.18, 4,305.42 and 922.40

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Solution

The fourth proportional to 2,870.18, 4,305.42 and 922.40 is: 1,383.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.18 : 4,305.42 = 922.40 : x
  2. Step 2: Convert to fraction form
    2,870.18/4,305.42 = 922.40/x
  3. Step 3: Cross multiply
    2,870.18x = 4,305.42 × 922.40
  4. Step 4: Simplify right side
    2,870.18x = 3,971,319.41
  5. Step 5: Solve for x
    x = 3,971,319.41/2,870.18
  6. Step 6: Final answer
    x = 1,383.65

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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.