Home / 2,985-4,479.28-1,038.56

Finding the Fourth Proportional to 2,985, 4,479.28 and 1,038.56

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Solution

The fourth proportional to 2,985, 4,479.28 and 1,038.56 is: 1,558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985 : 4,479.28 = 1,038.56 : x
  2. Step 2: Convert to fraction form
    2,985/4,479.28 = 1,038.56/x
  3. Step 3: Cross multiply
    2,985x = 4,479.28 × 1,038.56
  4. Step 4: Simplify right side
    2,985x = 4,652,001.04
  5. Step 5: Solve for x
    x = 4,652,001.04/2,985
  6. Step 6: Final answer
    x = 1,558.46

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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.