Home / 1,947.04-2,920.14-630.91

Finding the Fourth Proportional to 1,947.04, 2,920.14 and 630.91

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Solution

The fourth proportional to 1,947.04, 2,920.14 and 630.91 is: 946.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.04 : 2,920.14 = 630.91 : x
  2. Step 2: Convert to fraction form
    1,947.04/2,920.14 = 630.91/x
  3. Step 3: Cross multiply
    1,947.04x = 2,920.14 × 630.91
  4. Step 4: Simplify right side
    1,947.04x = 1,842,345.53
  5. Step 5: Solve for x
    x = 1,842,345.53/1,947.04
  6. Step 6: Final answer
    x = 946.23

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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.