Home / 7,140.74-10,710.80-1,946.60

Finding the Fourth Proportional to 7,140.74, 10,710.80 and 1,946.60

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Solution

The fourth proportional to 7,140.74, 10,710.80 and 1,946.60 is: 2,919.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.74 : 10,710.80 = 1,946.60 : x
  2. Step 2: Convert to fraction form
    7,140.74/10,710.80 = 1,946.60/x
  3. Step 3: Cross multiply
    7,140.74x = 10,710.80 × 1,946.60
  4. Step 4: Simplify right side
    7,140.74x = 20,849,643.28
  5. Step 5: Solve for x
    x = 20,849,643.28/7,140.74
  6. Step 6: Final answer
    x = 2,919.82

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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.