Home / 2,877.13-3,970.56-1,698.20

Finding the Fourth Proportional to 2,877.13, 3,970.56 and 1,698.20

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Solution

The fourth proportional to 2,877.13, 3,970.56 and 1,698.20 is: 2,343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.13 : 3,970.56 = 1,698.20 : x
  2. Step 2: Convert to fraction form
    2,877.13/3,970.56 = 1,698.20/x
  3. Step 3: Cross multiply
    2,877.13x = 3,970.56 × 1,698.20
  4. Step 4: Simplify right side
    2,877.13x = 6,742,804.99
  5. Step 5: Solve for x
    x = 6,742,804.99/2,877.13
  6. Step 6: Final answer
    x = 2,343.59

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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.