Home / 2,912.65-4,019.45-1,586.35

Finding the Fourth Proportional to 2,912.65, 4,019.45 and 1,586.35

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Solution

The fourth proportional to 2,912.65, 4,019.45 and 1,586.35 is: 2,189.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.65 : 4,019.45 = 1,586.35 : x
  2. Step 2: Convert to fraction form
    2,912.65/4,019.45 = 1,586.35/x
  3. Step 3: Cross multiply
    2,912.65x = 4,019.45 × 1,586.35
  4. Step 4: Simplify right side
    2,912.65x = 6,376,254.51
  5. Step 5: Solve for x
    x = 6,376,254.51/2,912.65
  6. Step 6: Final answer
    x = 2,189.16

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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.