Home / 5,780.02-7,970.40-4,290.88

Finding the Fourth Proportional to 5,780.02, 7,970.40 and 4,290.88

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Solution

The fourth proportional to 5,780.02, 7,970.40 and 4,290.88 is: 5,916.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.02 : 7,970.40 = 4,290.88 : x
  2. Step 2: Convert to fraction form
    5,780.02/7,970.40 = 4,290.88/x
  3. Step 3: Cross multiply
    5,780.02x = 7,970.40 × 4,290.88
  4. Step 4: Simplify right side
    5,780.02x = 34,200,029.95
  5. Step 5: Solve for x
    x = 34,200,029.95/5,780.02
  6. Step 6: Final answer
    x = 5,916.94

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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.