Home / 2,985.10-4,118.98-1,725.91

Finding the Fourth Proportional to 2,985.10, 4,118.98 and 1,725.91

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Solution

The fourth proportional to 2,985.10, 4,118.98 and 1,725.91 is: 2,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.10 : 4,118.98 = 1,725.91 : x
  2. Step 2: Convert to fraction form
    2,985.10/4,118.98 = 1,725.91/x
  3. Step 3: Cross multiply
    2,985.10x = 4,118.98 × 1,725.91
  4. Step 4: Simplify right side
    2,985.10x = 7,108,988.77
  5. Step 5: Solve for x
    x = 7,108,988.77/2,985.10
  6. Step 6: Final answer
    x = 2,381.49

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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.