Home / 1,948.40-2,922.16-561.72

Finding the Fourth Proportional to 1,948.40, 2,922.16 and 561.72

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Solution

The fourth proportional to 1,948.40, 2,922.16 and 561.72 is: 842.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.40 : 2,922.16 = 561.72 : x
  2. Step 2: Convert to fraction form
    1,948.40/2,922.16 = 561.72/x
  3. Step 3: Cross multiply
    1,948.40x = 2,922.16 × 561.72
  4. Step 4: Simplify right side
    1,948.40x = 1,641,435.72
  5. Step 5: Solve for x
    x = 1,641,435.72/1,948.40
  6. Step 6: Final answer
    x = 842.45

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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.