Home / 2,915.48-4,022.07-1,970.93

Finding the Fourth Proportional to 2,915.48, 4,022.07 and 1,970.93

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Solution

The fourth proportional to 2,915.48, 4,022.07 and 1,970.93 is: 2,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,915.48 : 4,022.07 = 1,970.93 : x
  2. Step 2: Convert to fraction form
    2,915.48/4,022.07 = 1,970.93/x
  3. Step 3: Cross multiply
    2,915.48x = 4,022.07 × 1,970.93
  4. Step 4: Simplify right side
    2,915.48x = 7,927,198.31
  5. Step 5: Solve for x
    x = 7,927,198.31/2,915.48
  6. Step 6: Final answer
    x = 2,719.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.