Home / 2,875.77-4,315.28-1,415.34

Finding the Fourth Proportional to 2,875.77, 4,315.28 and 1,415.34

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Solution

The fourth proportional to 2,875.77, 4,315.28 and 1,415.34 is: 2,123.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.77 : 4,315.28 = 1,415.34 : x
  2. Step 2: Convert to fraction form
    2,875.77/4,315.28 = 1,415.34/x
  3. Step 3: Cross multiply
    2,875.77x = 4,315.28 × 1,415.34
  4. Step 4: Simplify right side
    2,875.77x = 6,107,581.32
  5. Step 5: Solve for x
    x = 6,107,581.32/2,875.77
  6. Step 6: Final answer
    x = 2,123.81

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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.