Home / 1,443.68-2,155.36-1,307.60

Finding the Fourth Proportional to 1,443.68, 2,155.36 and 1,307.60

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Solution

The fourth proportional to 1,443.68, 2,155.36 and 1,307.60 is: 1,952.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.68 : 2,155.36 = 1,307.60 : x
  2. Step 2: Convert to fraction form
    1,443.68/2,155.36 = 1,307.60/x
  3. Step 3: Cross multiply
    1,443.68x = 2,155.36 × 1,307.60
  4. Step 4: Simplify right side
    1,443.68x = 2,818,348.74
  5. Step 5: Solve for x
    x = 2,818,348.74/1,443.68
  6. Step 6: Final answer
    x = 1,952.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.