Home / 4,985.12-6,862.28-4,312.64

Finding the Fourth Proportional to 4,985.12, 6,862.28 and 4,312.64

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Solution

The fourth proportional to 4,985.12, 6,862.28 and 4,312.64 is: 5,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.12 : 6,862.28 = 4,312.64 : x
  2. Step 2: Convert to fraction form
    4,985.12/6,862.28 = 4,312.64/x
  3. Step 3: Cross multiply
    4,985.12x = 6,862.28 × 4,312.64
  4. Step 4: Simplify right side
    4,985.12x = 29,594,543.22
  5. Step 5: Solve for x
    x = 29,594,543.22/4,985.12
  6. Step 6: Final answer
    x = 5,936.58

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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.