Home / 1,931.16-2,896.74-470.31

Finding the Fourth Proportional to 1,931.16, 2,896.74 and 470.31

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Solution

The fourth proportional to 1,931.16, 2,896.74 and 470.31 is: 705.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.16 : 2,896.74 = 470.31 : x
  2. Step 2: Convert to fraction form
    1,931.16/2,896.74 = 470.31/x
  3. Step 3: Cross multiply
    1,931.16x = 2,896.74 × 470.31
  4. Step 4: Simplify right side
    1,931.16x = 1,362,365.79
  5. Step 5: Solve for x
    x = 1,362,365.79/1,931.16
  6. Step 6: Final answer
    x = 705.47

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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.